Ghyrson Starn, Kelermorph, Gisela, Blade of Goldnight, Irenicus's Vile Duplication, and Blim, Comedic Genius

Prerequisites

• Ghyrson Starn, Kelermorph on the battlefield
• Gisela, Blade of Goldnight on the battlefield
• Irenicus's Vile Duplication on the battlefield
• Blim, Comedic Genius on the battlefield
• You have a way to deal exactly two or three damage to an opponent
• Blim does not have summoning sickness and cannot be blocked by an opponent
• available

Steps

1. Deal combat damage to an opponent using Blim
2. Blim triggers, giving an opponent control of Gisela
3. Cast Irenicus's Vile Duplication by paying , creating a token copy of Ghyrson Starn that isn't legendary
4. Deal 2 or 3 damage to that opponent by any method, reduced to 1 due to Gisela
5. Ghyrson Starn and the Ghyrson Starn token trigger
6. Resolve the nontoken Ghyrson Starn trigger, dealing 1 damage to the opponent
7. The token Ghyrson Starn triggers, dealing 1 damage to the opponent
8. The nontoken Ghyrson Starn triggers, dealing 1 damage to the opponent
9. Repeat from step 7

Results

• Infinite damage to target opponent