Ghyrson Starn, Kelermorph, Temple Altisaur, Raptor Hatchling, and Spark Double

Prerequisites

• Ghyrson Starn, Kelermorph on the battlefield
• Temple Altisaur on the battlefield
• Raptor Hatchling on the battlefield
• Spark Double on the battlefield
• You have a way to give Raptor Hatchling indestructible
• You have a way to deal damage to Raptor Hatchling

Steps

1. Give Raptor Hatchling indestructible by any method
2. Deal damage to Raptor Hatchling, with all but 1 of that damage being prevented by Temple Altisaur
3. Raptor Hatchling, Ghyrson Starn, and Spark Double trigger
4. Resolve the Spark Double trigger, dealing 2 damage to any target
5. Resolve the Ghyrson Starn trigger, dealing 2 damage to Raptor Hatchling, with all but 1 of that damage being prevented by Temple Altisaur
6. Spark Double and Raptor Hatchling trigger
7. Resolve the Raptor Hatchling trigger, creating a 3/3 Dinosaur
8. Resolve the Spark Double trigger, dealing 2 damage to Raptor Hatchling, with all but 1 of that damage being prevented by Temple Altisaur
9. Ghyrson Starn and Raptor Hatchling trigger
10. Repeat from step 5

Results

• Infinite creature tokens
• Infinite ETB