diff --git a/README.md b/README.md
index 2f53825..a264b4b 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ Cog Function
 | chatter | **Alpha** | <details><summary>Chat-bot trained to talk like your guild</summary>Missing some key features, but currently functional</details> |
 | coglint | **Alpha** | <details><summary>Error check code in python syntax posted to discord</summary>Works, but probably needs more turning to work for cogs</details> |
 | fight | **Incomplete** | <details><summary>Organize bracket tournaments within discord</summary>Still in-progress, a massive project</details> |
-| flag | **Incomplete** | <details><summary>Create temporary marks on users that expire after specified time</summary>Not yet ported to v3</details> |
+| flag | **Alpha** | <details><summary>Create temporary marks on users that expire after specified time</summary>Ported, will not import old data. Please report bugs</details> |
 | forcemention | **Alpha** | <details><summary>Mentions unmentionable roles</summary>Very simple cog, mention doesn't persist</details> |
 | hangman | **Alpha** | <details><summary>Play a game of hangman</summary>Some visual glitches and needs more customization</details> |
 | howdoi | **Incomplete** | <details><summary>Create temporary marks on users that expire after specified time</summary>Not yet ported to v3</details> |
diff --git a/flag/__init__.py b/flag/__init__.py
new file mode 100644
index 0000000..0184952
--- /dev/null
+++ b/flag/__init__.py
@@ -0,0 +1,5 @@
+from .flag import Flag
+
+
+def setup(bot):
+    bot.add_cog(Flag(bot))
diff --git a/flag/flag.py b/flag/flag.py
new file mode 100644
index 0000000..7fe1b30
--- /dev/null
+++ b/flag/flag.py
@@ -0,0 +1,184 @@
+from datetime import date, timedelta
+
+import discord
+from redbot.core import Config, checks, commands
+from redbot.core.bot import Red
+from redbot.core.utils.chat_formatting import pagify
+
+
+class Flag:
+    """
+    Set expiring flags on members
+    """
+
+    def __init__(self, bot: Red):
+        self.bot = bot
+        self.config = Config.get_conf(self, identifier=9811198108111121, force_registration=True)
+        default_global = {}
+        default_guild = {
+            "days": 31,
+            "dm": True,
+            "flags": {}
+        }
+
+        self.config.register_global(**default_global)
+        self.config.register_guild(**default_guild)
+
+    @checks.is_owner()
+    @commands.command()
+    async def clearallflag(self, ctx: commands.Context):
+        """Clears all flags for all members in this server"""
+
+        await self.config.guild(ctx.guild).flags.clear()
+        await ctx.send("Done")
+
+    @checks.mod_or_permissions(manage_roles=True)
+    @commands.guild_only()
+    @commands.group()
+    async def flagset(self, ctx: commands.Context):
+        """
+        My custom cog
+       
+        Extra information goes here
+        """
+        if ctx.invoked_subcommand is None:
+            await ctx.send_help()
+
+    @flagset.command(name="expire")
+    async def flagset_expire(self, ctx: commands.Context, days: int):
+        """
+        Set the number of days for flags to expire after for server
+        """
+        await self.config.guild(ctx.guild).days.set(days)
+        await ctx.send("Number of days for new flags to expire is now {} days".format(days))
+
+    @flagset.command(name="dm")
+    async def flagset_dm(self, ctx: commands.Context):
+        """Toggles DM-ing the flags"""
+
+        dm = await self.config.guild(ctx.guild).dm()
+        await self.config.guild(ctx.guild).dm.set(not dm)
+
+        await ctx.send("DM-ing members when they get a flag is now set to **{}**".format(not dm))
+
+    @staticmethod
+    def _flag_template():
+        return {
+            'reason': "",
+            'expireyear': 0,
+            'expiremonth': 0,
+            'expireday': 0
+        }
+
+    # ************************Flag command group start************************
+    @checks.mod_or_permissions(manage_roles=True)
+    @commands.command()
+    async def flag(self, ctx: commands.Context, member: discord.Member, *, reason):
+        """Flag a member"""
+        guild = ctx.guild
+        await self._check_flags(guild)
+        # clashroyale = self.bot.get_cog('clashroyale')
+        # if clashroyale is None:
+        # await ctx.send("Requires clashroyale cog installed")
+        # return
+
+        flag = self._flag_template()
+        expiredate = date.today()
+        expiredate += timedelta(days=await self.config.guild(guild).days())
+
+        flag['reason'] = reason
+        flag['expireyear'] = expiredate.year
+        flag['expiremonth'] = expiredate.month
+        flag['expireday'] = expiredate.day
+
+        # flags = await self.config.guild(guild).flags.get_raw(str(member.id), default=[])
+        # flags.append(flag)
+        # await self.config.guild(guild).flags.set_raw(str(member.id), value=flags)
+
+        async with self.config.guild(guild).flags() as flags:
+            flags[str(member.id)].append(flag)
+
+        outembed = await self._list_flags(member)
+
+        if outembed:
+            await ctx.send(embed=outembed)
+            if await self.config.guild(guild).dm():
+                await member.send(embed=outembed)
+        else:
+            await ctx.send("This member has no flags.. somehow..")
+
+    @checks.mod_or_permissions(manage_roles=True)
+    @commands.command(pass_context=True, no_pm=True, aliases=['flagclear'])
+    async def clearflag(self, ctx: commands.Context, member: discord.Member):
+        """Clears flags for a member"""
+        guild = ctx.guild
+        await self._check_flags(guild)
+
+        await self.config.guild(guild).flags.set_raw(str(member.id), value=[])
+
+        await ctx.send("Success!")
+
+    @commands.command(pass_context=True, no_pm=True, aliases=['flaglist'])
+    async def listflag(self, ctx: commands.Context, member: discord.Member):
+        """Lists flags for a member"""
+        server = ctx.guild
+        await self._check_flags(server)
+
+        outembed = await self._list_flags(member)
+
+        if outembed:
+            await ctx.send(embed=outembed)
+        else:
+            await ctx.send("This member has no flags!")
+
+    @commands.command(pass_context=True, no_pm=True, aliases=['flagall'])
+    async def allflag(self, ctx: commands.Context):
+        """Lists all flags for the server"""
+        guild = ctx.guild
+        await self._check_flags(guild)
+        out = "All flags for {}\n".format(ctx.guild.name)
+
+        flags = await self.config.guild(guild).flags()
+        flag_d = {}
+        for memberid, flag_data in flags.items():
+            if len(flag_data) > 0:
+                member = guild.get_member(int(memberid))
+                flag_d[member.display_name + member.discriminator] = len(flag_data)
+
+        for display_name, flag_count in sorted(flag_d.items()):
+            out += "{} - **{}** flags".format(display_name, flag_count)
+
+        for page in pagify(out):
+            await ctx.send(page)
+
+    async def _list_flags(self, member: discord.Member):
+        """Returns a pretty embed of flags on a member"""
+        flags = await self.config.guild(member.guild).flags.get_raw(str(member.id), default=[])
+
+        embed = discord.Embed(title="Flags for " + member.display_name,
+                              description="User has {} active flags".format(len(flags)), color=0x804040)
+        for flag in flags:
+            embed.add_field(name="Reason: " + flag['reason'],
+                            value="Expires on " + str(date(flag['expireyear'], flag['expiremonth'], flag['expireday'])),
+                            inline=True)
+
+        embed.set_thumbnail(url=member.avatar_url)
+
+        return embed
+
+    async def _check_flags(self, guild: discord.Guild):
+        """Updates and removes expired flags"""
+        flag_data = await self.config.guild(guild).flags()
+        flag_d = {}
+        for memberid, flags in flag_data.items():
+            # for member in guild.members:
+            # flags = await self.config.guild(guild).flags.get_raw(str(member.id), default=[])
+            x = 0
+            while x < len(flags):
+                flag = flags[x]
+                if date.today() >= date(flag['expireyear'], flag['expiremonth'], flag['expireday']):
+                    del flags[x]
+                else:
+                    x += 1
+
+            await self.config.guild(guild).flags.set_raw(memberid, value=flags)
diff --git a/flag/info..json b/flag/info..json
new file mode 100644
index 0000000..b5908b9
--- /dev/null
+++ b/flag/info..json
@@ -0,0 +1,23 @@
+{
+  "author": [
+    "Bobloy"
+  ],
+  "bot_version": [
+    3,
+    0,
+    0
+  ],
+  "description": "Add expiring flags on members to track warnings or incidents",
+  "hidden": true,
+  "install_msg": "Thank you for installing Flag! Get started with `[p]help Flag`",
+  "requirements": [],
+  "short": "Add expiring flags to members",
+  "tags": [
+    "bobloy",
+    "warning",
+    "warn",
+    "temp",
+    "tools",
+    "warning"
+  ]
+}
\ No newline at end of file