Ghyrson Starn, Kelermorph, Gisela, Blade of Goldnight, Sakashima the Impostor, and Blim, Comedic Genius

Prerequisites

• Ghyrson Starn, Kelermorph on the battlefield
• Gisela, Blade of Goldnight on the battlefield
• Sakashima the Impostor 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

Steps

1. Deal combat damage to an opponent using Blim
2. Blim triggers, giving an opponent control of Gisela
3. Deal exactly two or three damage to the opponent, which is reduced to one by Gisela, triggering Ghyrson Starn and Sakashima the Impostor
4. Resolve the Ghyrson Starn trigger, dealing 1 damage to the opponent
5. Sakashima the Impostor triggers, dealing 1 damage to the opponent
6. Ghyrson Starn triggers, dealing 1 damage to the opponent
7. Repeat from step 5

Results

• Infinite damage to target opponent