Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Grimgrin, Corpse-Born, and Voracious Wurm

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Grimgrin, Corpse-Born on the battlefield
• Voracious Wurm on the battlefield

Steps

1. Activate Grimgrin by sacrificing Voracious Wurm
2. When Voracious Wurm dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to its replacement effect
3. Resolve the Grimgrin ability
4. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers