Ghyrson Starn, Kelermorph, Temple Altisaur, Bellowing Aegisaur, Eldrazi Monument, and Spark Double

Prerequisites

• Spark Double on the battlefield as a copy of Ghyrson Starn
• All other permanents on the battlefield
• All permanents on the battlefield
• You have a way to deal damage to Bellowing Aegisaur

Steps

1. Deal damage to Bellowing Aegisaur, with all but 1 of that damage being prevented by Temple Altisaur
2. Bellowing Aegisaur, Ghyrson Starn, and Spark Double trigger
3. Resolve the Spark Double trigger, dealing 2 damage to any target
4. Resolve the Ghyrson Starn trigger, dealing 2 damage to Bellowing Aegisaur, with all but 1 of that damage being prevented by Temple Altisaur
5. Spark Double and Bellowing Aegisaur trigger
6. Resolve the Bellowing Aegisaur trigger, putting a +1/+1 counter on each other creature you control
7. Resolve the Spark Double trigger, dealing 2 damage to Bellowing Aegisaur, with all but 1 of that damage being prevented by Temple Altisaur
8. Ghyrson Starn and Bellowing Aegisaur trigger
9. Repeat from step 4

Results

• Infinite +1/+1 counters on all creatures you control except Bellowing Aegisaur