Bioengineered Future + Krark-Clan Ironworks + Mister Gutsy + Nim Deathmantle

Mana needed: {2} if Mister Gutsy doesn't have a +1/+1 counter on it

G identity

Commander legal

The 4 combo pieces

• Bioengineered Future
• Krark-Clan Ironworks
• Mister Gutsy
• Nim Deathmantle

How to execute it

1. Activate Krark-Clan Ironworks by sacrificing Mister Gutsy, adding {C}{C}.
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 {C}{C}.
5. Resolve the Nim Deathmantle trigger, causing you to pay {4} to return Mister Gutsy from your graveyard to the battlefield with a +1/+1 counter on it, and attaching Nim Deathmantle to it.
6. Repeat.

What the combo produces

• Exile your library with the ability to play the exiled cards until end of turn
• Infinite colorless mana
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite Junk tokens
• Infinite sacrifice triggers