Aven Eternal [War of the Spark]

Set: War of the Spark Type: Creature — Zombie Bird Warrior Common Cost: {2}{U} Flying When Aven Eternal enters the battlefield, amass 1. (Put a +1/+1 counter on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.) "I've never seen the firemane angels so anxious." —Tajic