Flaxx, God of Death

Indestructible
As long as your devotion to black and white is less than seven, Flaxx, God of Death isn't a creature.
Path to Oblivion: Whenever a nontoken creature dies, you may exile it. If you do, put a +1/+1 counter on Flaxx, God of Death.
At the beginning of your upkeep, if there are three or more exiled cards, you may return one of them to the battlefield under your control.