Prerequisites
- Gravity Sphere on the battlefield
- Stormtide Leviathan on the battlefield
Steps
- Gravity Sphere causes all creatures to lose flying
- 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
Results
Required Cards 2
Gravity Sphere
World Enchantment
Stormtide Leviathan
Creature — Leviathan