Ghyrson Starn, Kelermorph + Temple Altisaur + Silverclad Ferocidons + Spark Double

Prerequisites

• You have a way to give Silverclad Ferocidons indestructible.
• You have a way to deal damage to Silverclad Ferocidons.

Steps

1. 1Give Silverclad Ferocidons indestructible by any method.
2. 2Deal damage to Silverclad Ferocidons, with all but 1 of that damage being prevented by Temple Altisaur.
3. 3Silverclad Ferocidons, Ghyrson Starn, and Spark Double trigger.
4. 4Resolve the Spark Double trigger, dealing 2 damage to any target.
5. 5Resolve the Ghyrson Starn trigger, dealing 2 damage to Silverclad Ferocidons, with all but 1 of that damage being prevented by Temple Altisaur.
6. 6Spark Double and Silverclad Ferocidons trigger.
7. 7Resolve the Silverclad Ferocidons trigger, causing each opponent to sacrifice a permanent.
8. 8Resolve the Spark Double trigger, dealing 2 damage to Silverclad Ferocidons, with all but 1 of that damage being prevented by Temple Altisaur.
9. 9Ghyrson Starn and Silverclad Ferocidons trigger.
10. 10Repeat from step 5.

Effects

• Each opponent sacrifices all permanents they control
• Mass Land Denial