Blazing Sunsteel, and Guilty Conscience

Prerequisites

• Blazing Sunsteel on the battlefield
• Guilty Conscience on the battlefield
• Blazing Sunsteel and Guilty Conscience 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 triggers, dealing damage equal to the damage dealt to any target
3. Guilty Conscience triggers, dealing damage equal to the damage dealt to the indestructible creature
4. Repeat from step 2

Results

• Infinite damage