Frilled Deathspitter, and Blazing Sunsteel

Prerequisites

• Frilled Deathspitter on the battlefield
• Blazing Sunsteel on the battlefield

Steps

1. Deal damage to Frilled Deathspitter
2. Frilled Deathspitter and Blazing Sunsteel trigger
3. Resolve the Frilled Deathspitter trigger, dealing 2 damage to an opponent
4. Resolve the Blazing Sunsteel trigger, dealing that much damage to Frilled Deathspitter
5. Repeat from step 2

Results

• Infinite damage