Savior of Ollenbock - Innistrad: Crimson Vow

Training (Whenever this creature attacks with another creature with greater power, put a +1/+1 counter on this creature.)

Whenever Savior of Ollenbock trains, exile up to one other target creature from the battlefield or creature card from a graveyard.

When Savior of Ollenbock leaves the battlefield, put the exiled cards onto the battlefield under their owners' control.