All Will Be One, and War Elemental

Prerequisites

• All Will Be One on the battlefield
• War Elemental on the battlefield
• You have a way to deal damage to an opponent

Steps

1. Deal damage to an opponent
2. War Elemental triggers, putting that many +1/+1 counters on it
3. All Will Be One triggers, dealing that much damage to an opponent
4. Repeat from step 2

Results

• Infinite +1/+1 counters on War Elemental
• Infinite damage