Goblin Bombardment, Thunderblust, and Hardened Academic

Prerequisites

• Goblin Bombardment on the battlefield
• Thunderblust on the battlefield
• Hardened Academic on the battlefield

Steps

1. Activate Goblin Bombardment by sacrificing Thunderblust
2. When Thunderblust 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 Thunderblust
4. Resolve the Goblin Bombardment ability
5. Repeat

Results

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