Goblin Bombardment + Gravelgill Axeshark + Hardened Academic

WUBR identity

Commander legal

The 3 combo pieces

• Goblin Bombardment
• Gravelgill Axeshark
• Hardened Academic

How to execute it

1. Activate Goblin Bombardment 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. Hardened Academic triggers, putting a +1/+1 counter on Gravelgill Axeshark.
4. Resolve the Goblin Bombardment ability.
5. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers