Aethersquall Ancient

Aethersquall Ancient {5}{U}{U}

Creature - Leviathan | Power/Toughness: 6 / 6
Flying
At the beginning of your upkeep, you get {E}{E}{E} (three energy counters).
Pay {E}{E}{E}{E}{E}{E}{E}{E}: Return all other creatures to their owners' hands. Activate this ability only any time you could cast a sorcery.