Emperor of Bones (MH3-453) - Modern Horizons 3: (Extended Art)

At the beginning of combat on your turn, exile up to one target card from a graveyard.
: Adapt 2.
Whenever one or more +1/+1 counters are put on this creature, put a creature card exiled with this creature onto the battlefield under your control with a finality counter on it. It gains haste. Sacrifice it at the beginning of the next end step.