Aven Riftwatcher{2}{W}

Creature — Bird Rebel Soldier

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 or leaves the battlefield, you gain 2 life.

2/3

Illustrated by Don Hazeltine