Ghyrson Starn, Kelermorph, Protection of the Hekma, Irenicus's Vile Duplication, and Harmless Offering

Prerequisites

• Ghyrson Starn, Kelermorph on the battlefield
• Protection of the Hekma on the battlefield
• Irenicus's Vile Duplication in hand
• Harmless Offering in hand
• You have a way to deal exactly 2 damage to an opponent
• available

Steps

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

Results

• Infinite damage to target opponent