Blazing Sunsteel, and Sculpting Steel

Prerequisites

• Blazing Sunsteel on the battlefield
• Sculpting Steel on the battlefield
• Blazing Sunsteel and Sculpting Steel attached to an indestructible creature you control
• You have a way to deal damage to the indestructible creature

Steps

1. Deal damage to the indestructible creature
2. Blazing Sunsteel and Sculpting Steel trigger
3. Resolve the Blazing Sunsteel trigger, dealing damage equal to the damage dealt to any target
4. Resolve the Sculpting Steel trigger, dealing damage equal to the damage dealt to the indestructible creature
5. Repeat from step 2

Results

• Infinite damage