Frilled Deathspitter, and Guilty Conscience

Prerequisites

• Frilled Deathspitter on the battlefield
• Guilty Conscience on the battlefield
• Guilty Conscience attached to Frilled Deathspitter
• You have a way to give Frilled Deathspitter indestructible
• You have a way to deal damage to Frilled Deathspitter

Steps

1. Give Frilled Deathspitter indestructible by any method
2. Deal damage to Frilled Deathspitter by any method
3. Frilled Deathspitter triggers, dealing 2 damage to target opponent
4. Guilty Conscience triggers, dealing 2 damage to Frilled Deathspitter
5. Repeat from step 3

Results

• Infinite damage