Savior of Ollenbock

“Training <em>(Whenever this creature attacks with another creature with greater power, put a +1/+1 counter on this creature.)</em> <br>Whenever Savior of Ollenbock trains, exile up to one other target creature from the battlefield or creature card from a graveyard. <br>When Savior of Ollenbock leaves the battlefield, put the exiled cards onto the battlefield under their owner's control.”