The Black Mask

Henchman creatures you control get +2/+1.
{b}{b}, Sacrifice a Henchman: Target creature
gets -X/-X until end of turn, where X is the sacrificed creature's power. Activate this ability only any time you could cast a sorcery and only once each turn.
"I'm not happy, and despite appearances... this ain't a damned smile on my face." -Black Mask, Batman Vol 1. #648