Stuffy Doll, and Guilty Conscience

Prerequisites

• Stuffy Doll on the battlefield
• Guilty Conscience on the battlefield
• Guilty Conscience attached to Stuffy Doll
• Stuffy Doll does not have summoning sickness

Steps

1. Tap Stuffy Doll to deal 1 damage to the chosen opponent
2. This triggers Guilty Conscience to deal 1 damage to Stuffy Doll
3. The 1 damage triggers Stuffy Doll to deal a damage to the opponent and triggers Guilty Conscience again
4. Repeat steps 1-3

Results

• Infinite damage to one opponent