Aether Swooper [Aether Revolt]

Set: Aether Revolt Type: Creature — Vedalken Artificer Common Cost: {1}{U} Flying When Aether Swooper enters the battlefield, you get {E}{E} (two energy counters). Whenever Aether Swooper attacks, you may pay {E}{E}. If you do, create a 1/1 colorless Servo artifact creature token.