Ghyrson Starn, Kelermorph, Nomads en-Kor, Brash Taunter, and Double Major

Prerequisites

• Ghyrson Starn, Kelermorph in hand
• Nomads en-Kor on the battlefield
• Brash Taunter on the battlefield
• Double Major in hand
• You have a way to give Nomads en-Kor indestructible
• You have a way to target Nomads en-Kor with any amount of damage
• available

Steps

1. Cast Ghyrson Starn by paying
2. Holding priority, cast Double Major by paying , copying the Ghyrson Starn spell, except it isn't legendary
3. Resolve both Ghyrson Starn spells, causing Ghyrson Starn to enter the battlefield and creating a nonlegendary token copy of Ghyrson Starn
4. Give Nomads en-Kor indestructible, if needed, and then target Nomads en-Kor with any amount of damage
5. 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
6. Repeat step 5 until only 1 damage will be dealt to Nomads en-Kor
7. Resolve the spell or ability, dealing 1 damage to Nomads en-Kor and any remaining damage to Brash Taunter
8. Ghyrson Starn and the Ghyrson Starn token trigger for the damage dealt to Nomads en-Kor, along with Brash Taunter
9. Ghyrson Starn and the Ghyrson Starn token also trigger for the damage dealt to Brash Taunter if exactly 1 damage was dealt to it
10. Resolve the Brash Taunter trigger, dealing at least 1 damage to an opponent
11. Resolve both Ghyrson Starn token triggers, dealing 2 damage to Nomads en-Kor, and 2 damage to Brash Taunter, if applicable
12. If Brash Taunter was dealt damage, it triggers, dealing 2 damage to an opponent
13. Resolve the Ghyrson Starn trigger from damage dealt to Brash Taunter, if applicable, dealing 2 damage to Brash Taunter
14. If Brash Taunter was dealt damage, it triggers, dealing 2 damage to an opponent
15. 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
16. 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
17. The Ghyrson Starn token triggers twice, and Brash Taunter triggers once
18. Resolve the Ghyrson Starn token trigger from damage dealt to Brash Taunter, dealing 2 damage to Brash Taunter
19. Brash Taunter triggers, dealing 2 damage to an opponent
20. Resolve the Brash Taunter trigger from step 16, dealing 1 damage to an opponent
21. 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
22. Resolve the Ghyrson Starn token trigger from damage dealt to Nomads en-Kor in step 16, dealing 1 damage to Brash Taunter and 1 damage to Nomads en-Kor
23. Repeat from step 16 one additional time, with the nontoken Ghyrson Starn triggering instead of the token Ghyrson Starn
24. Repeat from step 16

Results

• Infinite damage