Merge branch 'master' into master

13 files changed, 726 insertions, 124 deletions

diff --git a/bot/constants.py b/bot/constants.py
index 133db56c..7c8f72cb 100644
--- a/bot/constants.py
+++ b/bot/constants.py
@@ -17,6 +17,7 @@ __all__ = (
     "Month",
     "Roles",
     "Tokens",
+    "Wolfram",
     "MODERATION_ROLES",
     "STAFF_ROLES",
     "WHITELISTED_CHANNELS",
@@ -51,6 +52,7 @@ class Channels(NamedTuple):
     devalerts = 460181980097675264
     devlog = int(environ.get("CHANNEL_DEVLOG", 622895325144940554))
     dev_contrib = 635950537262759947
+    dev_branding = 753252897059373066
     help_0 = 303906576991780866
     help_1 = 303906556754395136
     help_2 = 303906514266226689
@@ -92,10 +94,11 @@ class Colours:
     dark_green = 0x1f8b4c
     orange = 0xe67e22
     pink = 0xcf84e0
+    purple = 0xb734eb
     soft_green = 0x68c290
+    soft_orange = 0xf9cb54
     soft_red = 0xcd6d6d
     yellow = 0xf9f586
-    purple = 0xb734eb
 
 
 class Emojis:
@@ -106,12 +109,12 @@ class Emojis:
     trashcan = "<:trashcan:637136429717389331>"
     ok_hand = ":ok_hand:"
 
-    terning1 = "<:terning1:431249668983488527>"
-    terning2 = "<:terning2:462339216987127808>"
-    terning3 = "<:terning3:431249694467948544>"
-    terning4 = "<:terning4:579980271475228682>"
-    terning5 = "<:terning5:431249716328792064>"
-    terning6 = "<:terning6:431249726705369098>"
+    dice_1 = "<:dice_1:755891608859443290>"
+    dice_2 = "<:dice_2:755891608741740635>"
+    dice_3 = "<:dice_3:755891608251138158>"
+    dice_4 = "<:dice_4:755891607882039327>"
+    dice_5 = "<:dice_5:755891608091885627>"
+    dice_6 = "<:dice_6:755891607680843838>"
 
     issue = "<:IssueOpen:629695470327037963>"
     issue_closed = "<:IssueClosed:629695470570307614>"
@@ -187,6 +190,12 @@ class Tokens(NamedTuple):
     github = environ.get("GITHUB_TOKEN")
 
 
+class Wolfram(NamedTuple):
+    user_limit_day = int(environ.get("WOLFRAM_USER_LIMIT_DAY", 10))
+    guild_limit_day = int(environ.get("WOLFRAM_GUILD_LIMIT_DAY", 67))
+    key = environ.get("WOLFRAM_API_KEY")
+
+
 # Default role combinations
 MODERATION_ROLES = Roles.moderator, Roles.admin, Roles.owner
 STAFF_ROLES = Roles.helpers, Roles.moderator, Roles.admin, Roles.owner
diff --git a/bot/exts/easter/conversationstarters.py b/bot/exts/easter/conversationstarters.py
deleted file mode 100644
index a5f40445..00000000
--- a/bot/exts/easter/conversationstarters.py
+++ /dev/null
@@ -1,28 +0,0 @@
-import json
-import logging
-import random
-from pathlib import Path
-
-from discord.ext import commands
-
-log = logging.getLogger(__name__)
-
-with open(Path("bot/resources/easter/starter.json"), "r", encoding="utf8") as f:
-    starters = json.load(f)
-
-
-class ConvoStarters(commands.Cog):
-    """Easter conversation topics."""
-
-    def __init__(self, bot: commands.Bot):
-        self.bot = bot
-
-    @commands.command()
-    async def topic(self, ctx: commands.Context) -> None:
-        """Responds with a random topic to start a conversation."""
-        await ctx.send(random.choice(starters['starters']))
-
-
-def setup(bot: commands.Bot) -> None:
-    """Conversation starters Cog load."""
-    bot.add_cog(ConvoStarters(bot))
diff --git a/bot/exts/evergreen/conversationstarters.py b/bot/exts/evergreen/conversationstarters.py
new file mode 100644
index 00000000..576b8d76
--- /dev/null
+++ b/bot/exts/evergreen/conversationstarters.py
@@ -0,0 +1,71 @@
+from pathlib import Path
+
+import yaml
+from discord import Color, Embed
+from discord.ext import commands
+
+from bot.constants import WHITELISTED_CHANNELS
+from bot.utils.decorators import override_in_channel
+from bot.utils.randomization import RandomCycle
+
+SUGGESTION_FORM = 'https://forms.gle/zw6kkJqv8U43Nfjg9'
+
+with Path("bot/resources/evergreen/starter.yaml").open("r", encoding="utf8") as f:
+    STARTERS = yaml.load(f, Loader=yaml.FullLoader)
+
+with Path("bot/resources/evergreen/py_topics.yaml").open("r", encoding="utf8") as f:
+    # First ID is #python-general and the rest are top to bottom categories of Topical Chat/Help.
+    PY_TOPICS = yaml.load(f, Loader=yaml.FullLoader)
+
+    # Removing `None` from lists of topics, if not a list, it is changed to an empty one.
+    PY_TOPICS = {k: [i for i in v if i] if isinstance(v, list) else [] for k, v in PY_TOPICS.items()}
+
+    # All the allowed channels that the ".topic" command is allowed to be executed in.
+    ALL_ALLOWED_CHANNELS = list(PY_TOPICS.keys()) + list(WHITELISTED_CHANNELS)
+
+# Putting all topics into one dictionary and shuffling lists to reduce same-topic repetitions.
+ALL_TOPICS = {'default': STARTERS, **PY_TOPICS}
+TOPICS = {
+    channel: RandomCycle(topics or ['No topics found for this channel.'])
+    for channel, topics in ALL_TOPICS.items()
+}
+
+
+class ConvoStarters(commands.Cog):
+    """Evergreen conversation topics."""
+
+    def __init__(self, bot: commands.Bot):
+        self.bot = bot
+
+    @commands.command()
+    @override_in_channel(ALL_ALLOWED_CHANNELS)
+    async def topic(self, ctx: commands.Context) -> None:
+        """
+        Responds with a random topic to start a conversation.
+
+        If in a Python channel, a python-related topic will be given.
+
+        Otherwise, a random conversation topic will be received by the user.
+        """
+        # No matter what, the form will be shown.
+        embed = Embed(description=f'Suggest more topics [here]({SUGGESTION_FORM})!', color=Color.blurple())
+
+        try:
+            # Fetching topics.
+            channel_topics = TOPICS[ctx.channel.id]
+
+        # If the channel isn't Python-related.
+        except KeyError:
+            embed.title = f'**{next(TOPICS["default"])}**'
+
+        # If the channel ID doesn't have any topics.
+        else:
+            embed.title = f'**{next(channel_topics)}**'
+
+        finally:
+            await ctx.send(embed=embed)
+
+
+def setup(bot: commands.Bot) -> None:
+    """Conversation starters Cog load."""
+    bot.add_cog(ConvoStarters(bot))
diff --git a/bot/exts/evergreen/fun.py b/bot/exts/evergreen/fun.py
index 67a4bae5..de6a92c6 100644
--- a/bot/exts/evergreen/fun.py
+++ b/bot/exts/evergreen/fun.py
@@ -1,14 +1,16 @@
 import functools
+import json
 import logging
 import random
-from typing import Callable, Tuple, Union
+from pathlib import Path
+from typing import Callable, Iterable, Tuple, Union
 
 from discord import Embed, Message
 from discord.ext import commands
-from discord.ext.commands import Bot, Cog, Context, MessageConverter
+from discord.ext.commands import Bot, Cog, Context, MessageConverter, clean_content
 
 from bot import utils
-from bot.constants import Emojis
+from bot.constants import Colours, Emojis
 
 log = logging.getLogger(__name__)
 
@@ -26,12 +28,35 @@ UWU_WORDS = {
 }
 
 
+def caesar_cipher(text: str, offset: int) -> Iterable[str]:
+    """
+    Implements a lazy Caesar Cipher algorithm.
+
+    Encrypts a `text` given a specific integer `offset`. The sign
+    of the `offset` dictates the direction in which it shifts to,
+    with a negative value shifting to the left, and a positive
+    value shifting to the right.
+    """
+    for char in text:
+        if not char.isascii() or not char.isalpha() or char.isspace():
+            yield char
+            continue
+
+        case_start = 65 if char.isupper() else 97
+        true_offset = (ord(char) - case_start + offset) % 26
+
+        yield chr(case_start + true_offset)
+
+
 class Fun(Cog):
     """A collection of general commands for fun."""
 
     def __init__(self, bot: Bot) -> None:
         self.bot = bot
 
+        with Path("bot/resources/evergreen/caesar_info.json").open("r", encoding="UTF-8") as f:
+            self._caesar_cipher_embed = json.load(f)
+
     @commands.command()
     async def roll(self, ctx: Context, num_rolls: int = 1) -> None:
         """Outputs a number of random dice emotes (up to 6)."""
@@ -41,17 +66,13 @@ class Fun(Cog):
         elif num_rolls < 1:
             output = ":no_entry: You must roll at least once."
         for _ in range(num_rolls):
-            terning = f"terning{random.randint(1, 6)}"
-            output += getattr(Emojis, terning, '')
+            dice = f"dice_{random.randint(1, 6)}"
+            output += getattr(Emojis, dice, '')
         await ctx.send(output)
 
     @commands.command(name="uwu", aliases=("uwuwize", "uwuify",))
-    async def uwu_command(self, ctx: Context, *, text: str) -> None:
-        """
-        Converts a given `text` into it's uwu equivalent.
-
-        Also accepts a valid discord Message ID or link.
-        """
+    async def uwu_command(self, ctx: Context, *, text: clean_content(fix_channel_mentions=True)) -> None:
+        """Converts a given `text` into it's uwu equivalent."""
         conversion_func = functools.partial(
             utils.replace_many, replacements=UWU_WORDS, ignore_case=True, match_case=True
         )
@@ -66,12 +87,8 @@ class Fun(Cog):
         await ctx.send(content=converted_text, embed=embed)
 
     @commands.command(name="randomcase", aliases=("rcase", "randomcaps", "rcaps",))
-    async def randomcase_command(self, ctx: Context, *, text: str) -> None:
-        """
-        Randomly converts the casing of a given `text`.
-
-        Also accepts a valid discord Message ID or link.
-        """
+    async def randomcase_command(self, ctx: Context, *, text: clean_content(fix_channel_mentions=True)) -> None:
+        """Randomly converts the casing of a given `text`."""
         def conversion_func(text: str) -> str:
             """Randomly converts the casing of a given string."""
             return "".join(
@@ -87,22 +104,100 @@ class Fun(Cog):
             converted_text = f">>> {converted_text.lstrip('> ')}"
         await ctx.send(content=converted_text, embed=embed)
 
+    @commands.group(name="caesarcipher", aliases=("caesar", "cc",))
+    async def caesarcipher_group(self, ctx: Context) -> None:
+        """
+        Translates a message using the Caesar Cipher.
+
+        See `decrypt`, `encrypt`, and `info` subcommands.
+        """
+        if ctx.invoked_subcommand is None:
+            await ctx.invoke(self.bot.get_command("help"), "caesarcipher")
+
+    @caesarcipher_group.command(name="info")
+    async def caesarcipher_info(self, ctx: Context) -> None:
+        """Information about the Caesar Cipher."""
+        embed = Embed.from_dict(self._caesar_cipher_embed)
+        embed.colour = Colours.dark_green
+
+        await ctx.send(embed=embed)
+
+    @staticmethod
+    async def _caesar_cipher(ctx: Context, offset: int, msg: str, left_shift: bool = False) -> None:
+        """
+        Given a positive integer `offset`, translates and sends the given `msg`.
+
+        Performs a right shift by default unless `left_shift` is specified as `True`.
+
+        Also accepts a valid Discord Message ID or link.
+        """
+        if offset < 0:
+            await ctx.send(":no_entry: Cannot use a negative offset.")
+            return
+
+        if left_shift:
+            offset = -offset
+
+        def conversion_func(text: str) -> str:
+            """Encrypts the given string using the Caesar Cipher."""
+            return "".join(caesar_cipher(text, offset))
+
+        text, embed = await Fun._get_text_and_embed(ctx, msg)
+
+        if embed is not None:
+            embed = Fun._convert_embed(conversion_func, embed)
+
+        converted_text = conversion_func(text)
+
+        if converted_text:
+            converted_text = f">>> {converted_text.lstrip('> ')}"
+
+        await ctx.send(content=converted_text, embed=embed)
+
+    @caesarcipher_group.command(name="encrypt", aliases=("rightshift", "rshift", "enc",))
+    async def caesarcipher_encrypt(self, ctx: Context, offset: int, *, msg: str) -> None:
+        """
+        Given a positive integer `offset`, encrypt the given `msg`.
+
+        Performs a right shift of the letters in the message.
+
+        Also accepts a valid Discord Message ID or link.
+        """
+        await self._caesar_cipher(ctx, offset, msg, left_shift=False)
+
+    @caesarcipher_group.command(name="decrypt", aliases=("leftshift", "lshift", "dec",))
+    async def caesarcipher_decrypt(self, ctx: Context, offset: int, *, msg: str) -> None:
+        """
+        Given a positive integer `offset`, decrypt the given `msg`.
+
+        Performs a left shift of the letters in the message.
+
+        Also accepts a valid Discord Message ID or link.
+        """
+        await self._caesar_cipher(ctx, offset, msg, left_shift=True)
+
     @staticmethod
     async def _get_text_and_embed(ctx: Context, text: str) -> Tuple[str, Union[Embed, None]]:
         """
         Attempts to extract the text and embed from a possible link to a discord Message.
 
+        Does not retrieve the text and embed from the Message if it is in a channel the user does
+        not have read permissions in.
+
         Returns a tuple of:
             str: If `text` is a valid discord Message, the contents of the message, else `text`.
             Union[Embed, None]: The embed if found in the valid Message, else None
         """
         embed = None
-        message = await Fun._get_discord_message(ctx, text)
-        if isinstance(message, Message):
-            text = message.content
+
+        msg = await Fun._get_discord_message(ctx, text)
+        # Ensure the user has read permissions for the channel the message is in
+        if isinstance(msg, Message) and ctx.author.permissions_in(msg.channel).read_messages:
+            text = msg.clean_content
             # Take first embed because we can't send multiple embeds
-            if message.embeds:
-                embed = message.embeds[0]
+            if msg.embeds:
+                embed = msg.embeds[0]
+
         return (text, embed)
 
     @staticmethod
diff --git a/bot/exts/evergreen/issues.py b/bot/exts/evergreen/issues.py
index 0f83731b..5a5c82e7 100644
--- a/bot/exts/evergreen/issues.py
+++ b/bot/exts/evergreen/issues.py
@@ -1,9 +1,10 @@
 import logging
+import random
 
 import discord
 from discord.ext import commands
 
-from bot.constants import Channels, Colours, Emojis, WHITELISTED_CHANNELS
+from bot.constants import Channels, Colours, ERROR_REPLIES, Emojis, Tokens, WHITELISTED_CHANNELS
 from bot.utils.decorators import override_in_channel
 
 log = logging.getLogger(__name__)
@@ -13,6 +14,12 @@ BAD_RESPONSE = {
     403: "Rate limit has been hit! Please try again later!"
 }
 
+MAX_REQUESTS = 10
+
+REQUEST_HEADERS = dict()
+if GITHUB_TOKEN := Tokens.github:
+    REQUEST_HEADERS["Authorization"] = f"token {GITHUB_TOKEN}"
+
 
 class Issues(commands.Cog):
     """Cog that allows users to retrieve issues from GitHub."""
@@ -21,53 +28,79 @@ class Issues(commands.Cog):
         self.bot = bot
 
     @commands.command(aliases=("pr",))
-    @override_in_channel(WHITELISTED_CHANNELS + (Channels.dev_contrib,))
+    @override_in_channel(WHITELISTED_CHANNELS + (Channels.dev_contrib, Channels.dev_branding))
     async def issue(
-        self, ctx: commands.Context, number: int, repository: str = "seasonalbot", user: str = "python-discord"
+        self,
+        ctx: commands.Context,
+        numbers: commands.Greedy[int],
+        repository: str = "seasonalbot",
+        user: str = "python-discord"
     ) -> None:
-        """Command to retrieve issues from a GitHub repository."""
-        url = f"https://api.github.com/repos/{user}/{repository}/issues/{number}"
-        merge_url = f"https://api.github.com/repos/{user}/{repository}/pulls/{number}/merge"
-
-        log.trace(f"Querying GH issues API: {url}")
-        async with self.bot.http_session.get(url) as r:
-            json_data = await r.json()
-
-        if r.status in BAD_RESPONSE:
-            log.warning(f"Received response {r.status} from: {url}")
-            return await ctx.send(f"[{str(r.status)}] {BAD_RESPONSE.get(r.status)}")
-
-        # The initial API request is made to the issues API endpoint, which will return information
-        # if the issue or PR is present. However, the scope of information returned for PRs differs
-        # from issues: if the 'issues' key is present in the response then we can pull the data we
-        # need from the initial API call.
-        if "issues" in json_data.get("html_url"):
-            if json_data.get("state") == "open":
-                icon_url = Emojis.issue
-            else:
-                icon_url = Emojis.issue_closed
-
-        # If the 'issues' key is not contained in the API response and there is no error code, then
-        # we know that a PR has been requested and a call to the pulls API endpoint is necessary
-        # to get the desired information for the PR.
-        else:
-            log.trace(f"PR provided, querying GH pulls API for additional information: {merge_url}")
-            async with self.bot.http_session.get(merge_url) as m:
+        """Command to retrieve issue(s) from a GitHub repository."""
+        links = []
+        numbers = set(numbers)
+
+        if not numbers:
+            await ctx.invoke(self.bot.get_command('help'), 'issue')
+            return
+
+        if len(numbers) > MAX_REQUESTS:
+            embed = discord.Embed(
+                title=random.choice(ERROR_REPLIES),
+                color=Colours.soft_red,
+                description=f"Too many issues/PRs! (maximum of {MAX_REQUESTS})"
+            )
+            await ctx.send(embed=embed)
+            return
+
+        for number in set(numbers):
+            # Convert from list to set to remove duplicates, if any.
+            url = f"https://api.github.com/repos/{user}/{repository}/issues/{number}"
+            merge_url = f"https://api.github.com/repos/{user}/{repository}/pulls/{number}/merge"
+
+            log.trace(f"Querying GH issues API: {url}")
+            async with self.bot.http_session.get(url, headers=REQUEST_HEADERS) as r:
+                json_data = await r.json()
+
+            if r.status in BAD_RESPONSE:
+                log.warning(f"Received response {r.status} from: {url}")
+                return await ctx.send(f"[{str(r.status)}] #{number} {BAD_RESPONSE.get(r.status)}")
+
+            # The initial API request is made to the issues API endpoint, which will return information
+            # if the issue or PR is present. However, the scope of information returned for PRs differs
+            # from issues: if the 'issues' key is present in the response then we can pull the data we
+            # need from the initial API call.
+            if "issues" in json_data.get("html_url"):
                 if json_data.get("state") == "open":
-                    icon_url = Emojis.pull_request
-                # When the status is 204 this means that the state of the PR is merged
-                elif m.status == 204:
-                    icon_url = Emojis.merge
+                    icon_url = Emojis.issue
                 else:
-                    icon_url = Emojis.pull_request_closed
+                    icon_url = Emojis.issue_closed
+
+            # If the 'issues' key is not contained in the API response and there is no error code, then
+            # we know that a PR has been requested and a call to the pulls API endpoint is necessary
+            # to get the desired information for the PR.
+            else:
+                log.trace(f"PR provided, querying GH pulls API for additional information: {merge_url}")
+                async with self.bot.http_session.get(merge_url) as m:
+                    if json_data.get("state") == "open":
+                        icon_url = Emojis.pull_request
+                    # When the status is 204 this means that the state of the PR is merged
+                    elif m.status == 204:
+                        icon_url = Emojis.merge
+                    else:
+                        icon_url = Emojis.pull_request_closed
+
+            issue_url = json_data.get("html_url")
+            links.append([icon_url, f"[{repository}] #{number} {json_data.get('title')}", issue_url])
 
-        issue_url = json_data.get("html_url")
-        description_text = f"[{repository}] #{number} {json_data.get('title')}"
+        # Issue/PR format: emoji to show if open/closed/merged, number and the title as a singular link.
+        description_list = ["{0} [{1}]({2})".format(*link) for link in links]
         resp = discord.Embed(
             colour=Colours.bright_green,
-            description=f"{icon_url} [{description_text}]({issue_url})"
+            description='\n'.join(description_list)
         )
-        resp.set_author(name="GitHub", url=issue_url)
+
+        resp.set_author(name="GitHub", url=f"https://github.com/{user}/{repository}")
         await ctx.send(embed=resp)
 
 
diff --git a/bot/exts/evergreen/reddit.py b/bot/exts/evergreen/reddit.py
index fe204419..49127bea 100644
--- a/bot/exts/evergreen/reddit.py
+++ b/bot/exts/evergreen/reddit.py
@@ -68,9 +68,9 @@ class Reddit(commands.Cog):
         # -----------------------------------------------------------
         # This code below is bound of change when the emojis are added.
 
-        upvote_emoji = self.bot.get_emoji(638729835245731840)
-        comment_emoji = self.bot.get_emoji(638729835073765387)
-        user_emoji = self.bot.get_emoji(638729835442602003)
+        upvote_emoji = self.bot.get_emoji(755845219890757644)
+        comment_emoji = self.bot.get_emoji(755845255001014384)
+        user_emoji = self.bot.get_emoji(755845303822974997)
         text_emoji = self.bot.get_emoji(676030265910493204)
         video_emoji = self.bot.get_emoji(676030265839190047)
         image_emoji = self.bot.get_emoji(676030265734201344)
diff --git a/bot/exts/evergreen/wolfram.py b/bot/exts/evergreen/wolfram.py
new file mode 100644
index 00000000..898e8d2a
--- /dev/null
+++ b/bot/exts/evergreen/wolfram.py
@@ -0,0 +1,278 @@
+import logging
+from io import BytesIO
+from typing import Callable, List, Optional, Tuple
+from urllib import parse
+
+import arrow
+import discord
+from discord import Embed
+from discord.ext import commands
+from discord.ext.commands import BucketType, Cog, Context, check, group
+
+from bot.constants import Colours, STAFF_ROLES, Wolfram
+from bot.utils.pagination import ImagePaginator
+
+log = logging.getLogger(__name__)
+
+APPID = Wolfram.key
+DEFAULT_OUTPUT_FORMAT = "JSON"
+QUERY = "http://api.wolframalpha.com/v2/{request}?{data}"
+WOLF_IMAGE = "https://www.symbols.com/gi.php?type=1&id=2886&i=1"
+
+MAX_PODS = 20
+
+# Allows for 10 wolfram calls pr user pr day
+usercd = commands.CooldownMapping.from_cooldown(Wolfram.user_limit_day, 60 * 60 * 24, BucketType.user)
+
+# Allows for max api requests / days in month per day for the entire guild (Temporary)
+guildcd = commands.CooldownMapping.from_cooldown(Wolfram.guild_limit_day, 60 * 60 * 24, BucketType.guild)
+
+
+async def send_embed(
+        ctx: Context,
+        message_txt: str,
+        colour: int = Colours.soft_red,
+        footer: str = None,
+        img_url: str = None,
+        f: discord.File = None
+) -> None:
+    """Generate & send a response embed with Wolfram as the author."""
+    embed = Embed(colour=colour)
+    embed.description = message_txt
+    embed.set_author(name="Wolfram Alpha",
+                     icon_url=WOLF_IMAGE,
+                     url="https://www.wolframalpha.com/")
+    if footer:
+        embed.set_footer(text=footer)
+
+    if img_url:
+        embed.set_image(url=img_url)
+
+    await ctx.send(embed=embed, file=f)
+
+
+def custom_cooldown(*ignore: List[int]) -> Callable:
+    """
+    Implement per-user and per-guild cooldowns for requests to the Wolfram API.
+
+    A list of roles may be provided to ignore the per-user cooldown
+    """
+    async def predicate(ctx: Context) -> bool:
+        if ctx.invoked_with == 'help':
+            # if the invoked command is help we don't want to increase the ratelimits since it's not actually
+            # invoking the command/making a request, so instead just check if the user/guild are on cooldown.
+            guild_cooldown = not guildcd.get_bucket(ctx.message).get_tokens() == 0  # if guild is on cooldown
+            if not any(r.id in ignore for r in ctx.author.roles):  # check user bucket if user is not ignored
+                return guild_cooldown and not usercd.get_bucket(ctx.message).get_tokens() == 0
+            return guild_cooldown
+
+        user_bucket = usercd.get_bucket(ctx.message)
+
+        if all(role.id not in ignore for role in ctx.author.roles):
+            user_rate = user_bucket.update_rate_limit()
+
+            if user_rate:
+                # Can't use api; cause: member limit
+                cooldown = arrow.utcnow().shift(seconds=int(user_rate)).humanize(only_distance=True)
+                message = (
+                    "You've used up your limit for Wolfram|Alpha requests.\n"
+                    f"Cooldown: {cooldown}"
+                )
+                await send_embed(ctx, message)
+                return False
+
+        guild_bucket = guildcd.get_bucket(ctx.message)
+        guild_rate = guild_bucket.update_rate_limit()
+
+        # Repr has a token attribute to read requests left
+        log.debug(guild_bucket)
+
+        if guild_rate:
+            # Can't use api; cause: guild limit
+            message = (
+                "The max limit of requests for the server has been reached for today.\n"
+                f"Cooldown: {int(guild_rate)}"
+            )
+            await send_embed(ctx, message)
+            return False
+
+        return True
+
+    return check(predicate)
+
+
+async def get_pod_pages(ctx: Context, bot: commands.Bot, query: str) -> Optional[List[Tuple]]:
+    """Get the Wolfram API pod pages for the provided query."""
+    async with ctx.channel.typing():
+        url_str = parse.urlencode({
+            "input": query,
+            "appid": APPID,
+            "output": DEFAULT_OUTPUT_FORMAT,
+            "format": "image,plaintext"
+        })
+        request_url = QUERY.format(request="query", data=url_str)
+
+        async with bot.http_session.get(request_url) as response:
+            json = await response.json(content_type='text/plain')
+
+        result = json["queryresult"]
+
+        if result["error"]:
+            # API key not set up correctly
+            if result["error"]["msg"] == "Invalid appid":
+                message = "Wolfram API key is invalid or missing."
+                log.warning(
+                    "API key seems to be missing, or invalid when "
+                    f"processing a wolfram request: {url_str}, Response: {json}"
+                )
+                await send_embed(ctx, message)
+                return
+
+            message = "Something went wrong internally with your request, please notify staff!"
+            log.warning(f"Something went wrong getting a response from wolfram: {url_str}, Response: {json}")
+            await send_embed(ctx, message)
+            return
+
+        if not result["success"]:
+            message = f"I couldn't find anything for {query}."
+            await send_embed(ctx, message)
+            return
+
+        if not result["numpods"]:
+            message = "Could not find any results."
+            await send_embed(ctx, message)
+            return
+
+        pods = result["pods"]
+        pages = []
+        for pod in pods[:MAX_PODS]:
+            subs = pod.get("subpods")
+
+            for sub in subs:
+                title = sub.get("title") or sub.get("plaintext") or sub.get("id", "")
+                img = sub["img"]["src"]
+                pages.append((title, img))
+        return pages
+
+
+class Wolfram(Cog):
+    """Commands for interacting with the Wolfram|Alpha API."""
+
+    def __init__(self, bot: commands.Bot):
+        self.bot = bot
+
+    @group(name="wolfram", aliases=("wolf", "wa"), invoke_without_command=True)
+    @custom_cooldown(*STAFF_ROLES)
+    async def wolfram_command(self, ctx: Context, *, query: str) -> None:
+        """Requests all answers on a single image, sends an image of all related pods."""
+        url_str = parse.urlencode({
+            "i": query,
+            "appid": APPID,
+        })
+        query = QUERY.format(request="simple", data=url_str)
+
+        # Give feedback that the bot is working.
+        async with ctx.channel.typing():
+            async with self.bot.http_session.get(query) as response:
+                status = response.status
+                image_bytes = await response.read()
+
+            f = discord.File(BytesIO(image_bytes), filename="image.png")
+            image_url = "attachment://image.png"
+
+            if status == 501:
+                message = "Failed to get response"
+                footer = ""
+                color = Colours.soft_red
+            elif status == 400:
+                message = "No input found"
+                footer = ""
+                color = Colours.soft_red
+            elif status == 403:
+                message = "Wolfram API key is invalid or missing."
+                footer = ""
+                color = Colours.soft_red
+            else:
+                message = ""
+                footer = "View original for a bigger picture."
+                color = Colours.soft_orange
+
+            # Sends a "blank" embed if no request is received, unsure how to fix
+            await send_embed(ctx, message, color, footer=footer, img_url=image_url, f=f)
+
+    @wolfram_command.command(name="page", aliases=("pa", "p"))
+    @custom_cooldown(*STAFF_ROLES)
+    async def wolfram_page_command(self, ctx: Context, *, query: str) -> None:
+        """
+        Requests a drawn image of given query.
+
+        Keywords worth noting are, "like curve", "curve", "graph", "pokemon", etc.
+        """
+        pages = await get_pod_pages(ctx, self.bot, query)
+
+        if not pages:
+            return
+
+        embed = Embed()
+        embed.set_author(name="Wolfram Alpha",
+                         icon_url=WOLF_IMAGE,
+                         url="https://www.wolframalpha.com/")
+        embed.colour = Colours.soft_orange
+
+        await ImagePaginator.paginate(pages, ctx, embed)
+
+    @wolfram_command.command(name="cut", aliases=("c",))
+    @custom_cooldown(*STAFF_ROLES)
+    async def wolfram_cut_command(self, ctx: Context, *, query: str) -> None:
+        """
+        Requests a drawn image of given query.
+
+        Keywords worth noting are, "like curve", "curve", "graph", "pokemon", etc.
+        """
+        pages = await get_pod_pages(ctx, self.bot, query)
+
+        if not pages:
+            return
+
+        if len(pages) >= 2:
+            page = pages[1]
+        else:
+            page = pages[0]
+
+        await send_embed(ctx, page[0], colour=Colours.soft_orange, img_url=page[1])
+
+    @wolfram_command.command(name="short", aliases=("sh", "s"))
+    @custom_cooldown(*STAFF_ROLES)
+    async def wolfram_short_command(self, ctx: Context, *, query: str) -> None:
+        """Requests an answer to a simple question."""
+        url_str = parse.urlencode({
+            "i": query,
+            "appid": APPID,
+        })
+        query = QUERY.format(request="result", data=url_str)
+
+        # Give feedback that the bot is working.
+        async with ctx.channel.typing():
+            async with self.bot.http_session.get(query) as response:
+                status = response.status
+                response_text = await response.text()
+
+            if status == 501:
+                message = "Failed to get response"
+                color = Colours.soft_red
+            elif status == 400:
+                message = "No input found"
+                color = Colours.soft_red
+            elif response_text == "Error 1: Invalid appid":
+                message = "Wolfram API key is invalid or missing."
+                color = Colours.soft_red
+            else:
+                message = response_text
+                color = Colours.soft_orange
+
+            await send_embed(ctx, message, color)
+
+
+def setup(bot: commands.Bot) -> None:
+    """Load the Wolfram cog."""
+    bot.add_cog(Wolfram(bot))
diff --git a/bot/resources/easter/starter.json b/bot/resources/easter/starter.json
deleted file mode 100644
index 31e2cbc9..00000000
--- a/bot/resources/easter/starter.json
+++ /dev/null
@@ -1,24 +0,0 @@
-{
-  "starters": [
-    "What is your favourite Easter candy or treat?",
-    "What is your earliest memory of Easter?",
-    "What is the title of the last book you read?",
-    "What is better: Milk, Dark or White chocolate?",
-    "What is your favourite holiday?",
-    "If you could have any superpower, what would it be?",
-    "Name one thing you like about a person to your right.",
-    "If you could be anyone else for one day, who would it be?",
-    "What Easter tradition do you enjoy most?",
-    "What is the best gift you've been given?",
-    "Name one famous person you would like to have at your easter dinner.",
-    "What was the last movie you saw in a cinema?",
-    "What is your favourite food?",
-    "If you could travel anywhere in the world, where would you go?",
-    "Tell us 5 things you do well.",
-    "What is your favourite place that you have visited?",
-    "What is your favourite color?",
-    "If you had $100 bill in your Easter Basket, what would you do with it?",
-    "What would you do if you know you could succeed at anything you chose to do?",
-    "If you could take only three things from your house, what would they be?"
-  ]
-}
diff --git a/bot/resources/evergreen/caesar_info.json b/bot/resources/evergreen/caesar_info.json
new file mode 100644
index 00000000..8229c4f3
--- /dev/null
+++ b/bot/resources/evergreen/caesar_info.json
@@ -0,0 +1,4 @@
+{
+    "title": "Caesar Cipher",
+    "description": "**Information**\nThe Caesar Cipher, named after the Roman General Julius Caesar, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter given a specific position offset in the alphabet, with the letters wrapping around both sides.\n\n**Examples**\n1) `Hello World` <=> `Khoor Zruog` where letters are shifted forwards by `3`.\n2) `Julius Caesar` <=> `Yjaxjh Rpthpg` where letters are shifted backwards by `11`."
+}
diff --git a/bot/resources/evergreen/py_topics.yaml b/bot/resources/evergreen/py_topics.yaml
new file mode 100644
index 00000000..1e53429a
--- /dev/null
+++ b/bot/resources/evergreen/py_topics.yaml
@@ -0,0 +1,89 @@
+# Conversation starters for Python-related channels.
+
+# python-general
+267624335836053506:
+    - What's your favorite PEP?
+    - What's your current text editor/IDE, and what functionality do you like about it the most when programming in Python?
+    - What functionality is your text editor/IDE missing for programming Python?
+    - What parts of your life has Python automated, if any?
+    - Which Python project are you the most proud of making?
+    - What made you want to learn Python?
+    - When did you start learning Python?
+    - What reasons are you learning Python for?
+    - Where's the strangest place you've seen Python?
+    - How has learning Python changed your life?
+    - Is there a package you wish existed but doesn't? What is it?
+    - What feature do you think should be added to Python?
+    - Has Python helped you in school? If so, how?
+    - What was the first thing you created with Python?
+
+# async
+630504881542791169:
+    - Are there any frameworks you wish were async?
+    - How have coroutines changed the way you write Python?
+
+# c-extensions
+728390945384431688:
+    -
+
+# computer-science
+650401909852864553:
+    -
+
+# databases
+342318764227821568:
+    - Where do you get your best data?
+
+# data-science
+366673247892275221:
+    -
+
+# discord.py
+343944376055103488:
+    - What unique features does your bot contain, if any?
+    - What commands/features are you proud of making?
+    - What feature would you be the most interested in making?
+    - What feature would you like to see added to the library? what feature in the library do you think is redundant?
+    - Do you think there's a way in which Discord could handle bots better?
+
+# esoteric-python
+470884583684964352:
+    - What's a common part of programming we can make harder?
+    - What are the pros and cons of messing with __magic__()?
+
+# game-development
+660625198390837248:
+    -
+
+# microcontrollers
+545603026732318730:
+    -
+
+# networking
+716325106619777044:
+    - If you could wish for a library involving networking, what would it be?
+
+# security
+366674035876167691:
+    - If you could wish for a library involving net-sec, what would it be?
+
+# software-testing
+463035728335732738:
+    -
+
+# tools-and-devops
+463035462760792066:
+    - What editor would you recommend to a beginner? Why?
+    - What editor would you recommend to be the most efficient? Why?
+
+# unix
+491523972836360192:
+    -
+
+# user-interfaces
+338993628049571840:
+    - What's the most impressive Desktop Application you've made with Python so far?
+
+# web-development
+366673702533988363:
+    - How has Python helped you in web development?
diff --git a/bot/resources/evergreen/starter.yaml b/bot/resources/evergreen/starter.yaml
new file mode 100644
index 00000000..53c89364
--- /dev/null
+++ b/bot/resources/evergreen/starter.yaml
@@ -0,0 +1,22 @@
+# Conversation starters for channels that are not Python-related.
+
+- What is your favourite Easter candy or treat?
+- What is your earliest memory of Easter?
+- What is the title of the last book you read?
+- "What is better: Milk, Dark or White chocolate?"
+- What is your favourite holiday?
+- If you could have any superpower, what would it be?
+- Name one thing you like about a person to your right.
+- If you could be anyone else for one day, who would it be?
+- What Easter tradition do you enjoy most?
+- What is the best gift you've been given?
+- Name one famous person you would like to have at your easter dinner.
+- What was the last movie you saw in a cinema?
+- What is your favourite food?
+- If you could travel anywhere in the world, where would you go?
+- Tell us 5 things you do well.
+- What is your favourite place that you have visited?
+- What is your favourite color?
+- If you had $100 bill in your Easter Basket, what would you do with it?
+- What would you do if you know you could succeed at anything you chose to do?
+- If you could take only three things from your house, what would they be?
diff --git a/bot/resources/evergreen/trivia_quiz.json b/bot/resources/evergreen/trivia_quiz.json
index 6100ca62..8f0a4114 100644
--- a/bot/resources/evergreen/trivia_quiz.json
+++ b/bot/resources/evergreen/trivia_quiz.json
@@ -217,6 +217,36 @@
       "question": "What does the acronym GPRS stand for?",
       "answer": "General Packet Radio Service",
       "info": "General Packet Radio Service (GPRS) is a packet-based mobile data service on the global system for mobile communications (GSM) of 3G and 2G cellular communication systems. It is a non-voice, high-speed and useful packet-switching technology intended for GSM networks."
+    },
+    {
+      "id": 131,
+      "question": "In what country is the Ebro river located?",
+      "answer": "Spain",
+      "info": "The Ebro river is located in Spain. It is 930 kilometers long and it's the second longest river that ends on the Mediterranean Sea."
+    },
+    {
+      "id": 132,
+      "question": "What year was the IBM PC model 5150 introduced into the market?",
+      "answer": "1981",
+      "info": "The IBM PC was introduced into the market in 1981. It used the Intel 8088, with a clock speed of 4.77 MHz, along with the MDA and CGA as a video card."
+    },
+    {
+      "id": 133,
+      "question": "What's the world's largest urban area?",
+      "answer": "Tokyo",
+      "info": "Tokyo is the most populated city in the world, with a population of 37 million people. It is located in Japan."
+    },
+    {
+      "id": 134,
+      "question": "How many planets are there in the Solar system?",
+      "answer": "8",
+      "info": "In the Solar system, there are 8 planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Pluto isn't considered a planet in the Solar System anymore."
+    },
+    {
+      "id": 135,
+      "question": "What is the capital of Iraq?",
+      "answer": "Baghdad",
+      "info": "Baghdad is the capital of Iraq. It has a population of 7 million people."
     }
   ]
 }
diff --git a/bot/utils/randomization.py b/bot/utils/randomization.py
new file mode 100644
index 00000000..8f47679a
--- /dev/null
+++ b/bot/utils/randomization.py
@@ -0,0 +1,23 @@
+import itertools
+import random
+import typing as t
+
+
+class RandomCycle:
+    """
+    Cycles through elements from a randomly shuffled iterable, repeating indefinitely.
+
+    The iterable is reshuffled after each full cycle.
+    """
+
+    def __init__(self, iterable: t.Iterable) -> None:
+        self.iterable = list(iterable)
+        self.index = itertools.cycle(range(len(iterable)))
+
+    def __next__(self) -> t.Any:
+        idx = next(self.index)
+
+        if idx == 0:
+            random.shuffle(self.iterable)
+
+        return self.iterable[idx]