Mister Gutsy + Nim Deathmantle + Krark-Clan Ironworks + Good-Fortune Unicorn

Mister Gutsy

Nim Deathmantle

Krark-Clan Ironworks

Good-Fortune Unicorn

How it works

1. Activate Krark-Clan Ironworks by sacrificing Mister Gutsy, adding CC.
2. When Mister Gutsy dies, its second ability and Nim Deathmantle trigger.
3. Resolve the Mister Gutsy trigger, creating a number of Junk tokens equal to the number of +1/+1 counters that were on it.
4. If you created a Junk token, activate Krark-Clan Ironworks by sacrificing a Junk, adding CC.
5. Resolve the Nim Deathmantle trigger, causing you to pay 4 to return Mister Gutsy from your graveyard to the battlefield, and attaching Nim Deathmantle to it.
6. When Mister Gutsy enters the battlefield, Good-Fortune Unicorn trigger, putting a +1/+1 counter on Mister Gutsy.
7. Repeat.