Minotaur Reckoner

At the beginning of your upkeep, give the
weakest creature you don't control a stun
counter. (Lowest power. If tied by power, use
lowest toughness instead. If tied by power and
toughness, choose at random.)

I don't care who wronged you or what they did.
You need me to make it right in the pit, you pay
up front.