Red Hulk, Spitemare, and Selfless Spirit

Prerequisites

• Red Hulk on the battlefield
• Spitemare on the battlefield
• Selfless Spirit on the battlefield

Steps

1. Give Red Hulk and Spitemare indestructible using Selfless Spirit
2. Deal damage to Red Hulk
3. Red Hulk triggers, putting a +1/+1 counter on it and dealing damage to Spitemare
4. Spitemare triggers, dealing damage to Red Hulk
5. Repeat from step 3

Results

• Infinite +1/+1 counters on a creature
• Infinite damage to one opponent