Aethertide Whale [Aether Revolt Prerelease Promos]

Set: Aether Revolt Prerelease Promos Type: Creature — Whale Rarity: Rare Cost: {4}{U}{U} FlyingWhen Aethertide Whale enters the battlefield, you get {E}{E}{E}{E}{E}{E} (six energy counters).Pay {E}{E}{E}{E}: Return Aethertide Whale to its owner's hand. "To survive up here, I've learned when to use my harpoon and when to just enjoy the view." —Kadhu, skywhaler