Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Goblin Bombardment, and Reputable Merchant

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Goblin Bombardment on the battlefield
• Reputable Merchant on the battlefield

Steps

1. Activate Goblin Bombardment by sacrificing Reputable Merchant
2. When Reputable Merchant dies, its innate ability and persist ability trigger
3. Resolve the Reputable Merchant trigger, putting a +1/+1 counter on a creature you control
4. Resolve the persist trigger, returning Reputable Merchant from your graveyard to the battlefield with a -1/-1 counter on it
5. When Reputable Merchant enters, it triggers, putting a +1/+1 counter on it
6. Resolve the Goblin Bombardment ability
7. Repeat

Results

• Infinite +1/+1 counters on creatures you control
• Infinite ETB
• Infinite LTB
• Infinite damage
• Infinite death triggers
• Infinite sacrifice triggers