Gravelgill Axeshark + Stalwart Successor + Thermopod

UBRG identity

Commander legal

The 3 combo pieces

• Gravelgill Axeshark
• Stalwart Successor
• Thermopod

How to execute it

1. Activate Thermopod by sacrificing Gravelgill Axeshark
2. When Gravelgill Axeshark dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Gravelgill Axeshark enters, Stalwart Successor triggers, putting a +1/+1 counter on Gravelgill Axeshark
4. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite red mana
• Infinite sacrifice triggers