Durza's eraser

All evil figures your control gain +1/+1.
{b}: Target creature opponent's control
get -1/-1 until end of turn.
{b}{b}{b}: Destroy target creature.
{b}{b}{b}{b}{b}: Destroy target creature.
All creatures opponent's contrl get -1/-1
until end of turn.
NOOOOOOOOOO... My head!