Aven Riftwatcher [Planar Chaos]

Set: Planar Chaos Type: Creature — Bird Rebel Soldier Rarity: Common Cost: {2}{W} Flying Vanishing 3 (This creature enters the battlefield with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.) When Aven Riftwatcher enters the battlefield or leaves the battlefield, you gain 2 life.