Sett. Pit Boss

When Sett enters or attacks he fights target creature you don't control.

Sett's power is equal to the converted mana cost of a creature you don't control when he enters.

{t} - Sett deals damage equal to the toughness of target creature you don't control to another target creature controlled by the same player.
{x}{t} - Sett deals damage equal to the amount of damage he has taken this turn plus X to target creature you don't control.