Gravity Sphere + Stormtide Leviathan

UR identity

Commander legal

The 2 combo pieces

• Gravity Sphere
• Stormtide Leviathan

How to execute it

1. Gravity Sphere causes all creatures to lose flying.
2. Stormtide Leviathan prevents creatures from attacking unless they have flying and/or islandwalk. Since no creatures will have flying, only creatures with islandwalk can attack.

What the combo produces

• Creatures without islandwalk cannot attack