Ghyrson Starn, Kelermorph, Nomads en-Kor, Brash Taunter, and Helm of the Host

Prerequisites

• Ghyrson Starn, Kelermorph on the battlefield
• Nomads en-Kor on the battlefield
• Brash Taunter on the battlefield
• Helm of the Host on the battlefield
• You have a way to give Nomads en-Kor indestructible
• You have a way to target Nomads en-Kor with any amount of damage
• Helm of the Host attached to Ghyrson Starn

Steps

1. At the beginning of your combat phase, Helm of the Host triggers, creating a nonlegendary token copy of Ghyrson Starn
2. Give Nomads en-Kor indestructible, if needed, and then target Nomads en-Kor with any amount of damage
3. Holding priority, activate Nomads en-Kor by paying , causing the next 1 damage that would be dealt to it to be dealt to Brash Taunter instead
4. Repeat step 3 until only 1 damage will be dealt to Nomads en-Kor
5. Resolve the spell or ability, dealing 1 damage to Nomads en-Kor and any remaining damage to Brash Taunter
6. Ghyrson Starn and the Ghyrson Starn token trigger for the damage dealt to Nomads en-Kor, along with Brash Taunter
7. Ghyrson Starn and the Ghyrson Starn token also trigger for the damage dealt to Brash Taunter if exactly 1 damage was dealt to it
8. Resolve the Brash Taunter trigger, dealing at least 1 damage to an opponent
9. Resolve both Ghyrson Starn token triggers, dealing 2 damage to Nomads en-Kor, and 2 damage to Brash Taunter, if applicable
10. If Brash Taunter was dealt damage, it triggers, dealing 2 damage to an opponent
11. Resolve the Ghyrson Starn trigger from damage dealt to Brash Taunter, if applicable, dealing 2 damage to Brash Taunter
12. If Brash Taunter was dealt damage, it triggers, dealing 2 damage to an opponent
13. Holding priority, activate Nomads en-Kor by paying , causing the next 1 damage that would be dealt to it to be dealt to Brash Taunter instead
14. Resolve the Ghyrson Starn trigger from damage dealt to Nomads en-Kor, dealing 1 damage to Nomads en-Kor and 1 damage to Brash Taunter
15. The Ghyrson Starn token triggers twice, and Brash Taunter triggers once
16. Resolve the Ghyrson Starn token trigger from damage dealt to Brash Taunter, dealing 2 damage to Brash Taunter
17. Brash Taunter triggers, dealing 2 damage to an opponent
18. Resolve the Brash Taunter trigger from step 14, dealing 1 damage to an opponent
19. Holding priority, activate Nomads en-Kor by paying , causing the next 1 damage that would be dealt to it to be dealt to Brash Taunter instead
20. Resolve the Ghyrson Starn token trigger from damage dealt to Nomads en-Kor in step 14, dealing 1 damage to Brash Taunter and 1 damage to Nomads en-Kor
21. Repeat from step 14 one additional time, with the nontoken Ghyrson Starn triggering instead of the token Ghyrson Starn
22. Repeat from step 14

Results

• Infinite damage