Penance, Genocidal Monstrosity

First Strike, Trample

Whenever Penance attacks, remove an overdrive counter. If you do, target
a creature or planeswalker at random. Deal 5 damage to that target. If that target dies this way, repeat this process. If Penance has no overdrive counters on it, transform it.

"That thing just tore him to shreds!" Yelena "Trapper" Pushkina