diff --git a/didier/cogs/owner.py b/didier/cogs/owner.py
new file mode 100644
index 0000000..af50633
--- /dev/null
+++ b/didier/cogs/owner.py
@@ -0,0 +1,27 @@
+from typing import Optional
+
+import discord
+from discord.ext import commands
+
+from didier import Didier
+
+
+class Owner(commands.Cog):
+    """Cog for owner-only commands"""
+
+    client: Didier
+
+    def __init__(self, client: Didier):
+        self.client = client
+
+    @commands.command(name="Sync")
+    @commands.is_owner()
+    async def sync(self, ctx: commands.Context, guild: Optional[discord.Guild] = None):
+        """Sync all application-commands in Discord"""
+        await self.client.tree.sync(guild=guild)
+        await ctx.message.add_reaction("🔄")
+
+
+async def setup(client: Didier):
+    """Load the cog"""
+    await client.add_cog(Owner(client))
diff --git a/didier/cogs/tasks.py b/didier/cogs/tasks.py
index 29e9530..c37b8b8 100644
--- a/didier/cogs/tasks.py
+++ b/didier/cogs/tasks.py
@@ -29,11 +29,12 @@ class Tasks(commands.Cog):
         if settings.UFORA_RSS_TOKEN is None or settings.UFORA_ANNOUNCEMENTS_CHANNEL is None:
             return
 
-        announcements_channel = self.client.get_channel(settings.UFORA_ANNOUNCEMENTS_CHANNEL)
-        announcements = await fetch_ufora_announcements(self.client.db_session)
+        async with self.client.db_session as session:
+            announcements_channel = self.client.get_channel(settings.UFORA_ANNOUNCEMENTS_CHANNEL)
+            announcements = await fetch_ufora_announcements(session)
 
-        for announcement in announcements:
-            await announcements_channel.send(embed=announcement.to_embed())
+            for announcement in announcements:
+                await announcements_channel.send(embed=announcement.to_embed())
 
     @pull_ufora_announcements.before_loop
     async def _before_ufora_announcements(self):
@@ -48,7 +49,8 @@ class Tasks(commands.Cog):
     @tasks.loop(hours=24)
     async def remove_old_ufora_announcements(self):
         """Remove all announcements that are over 1 week old, once per day"""
-        await remove_old_announcements(self.client.db_session)
+        async with self.client.db_session as session:
+            await remove_old_announcements(session)
 
     @remove_old_ufora_announcements.before_loop
     async def _before_remove_old_ufora_announcements(self):
diff --git a/didier/utils/discord/checks/__init__.py b/didier/utils/discord/checks/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/didier/utils/discord/checks/message_commands.py b/didier/utils/discord/checks/message_commands.py
new file mode 100644
index 0000000..e69de29