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.
A creature's training ability triggers only when both that creature and a creature with greater power are declared as attackers. Increasing a creature's power after attackers are declared won't cause a training ability to trigger.
19-11-2021
wotc
Once a creature's training ability has triggered, destroying the other attacking creature or reducing its power won't stop the creature with training from getting a +1/+1 counter.
19-11-2021
wotc
A creature “trains” when a +1/+1 counter is put onto it at as a result of its training ability resolving.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.