Rakdos Infiltrator

{1}{b/r}: Target creature can't block until end of turn.
{2}{b/r}{b/r}: Destroy target creature. That.
creature's controller loses 2 life and draws 2 cards
{3}{b/r}{b/r}{b/r}: Creatures that share a color with
this creature get two +1/+1 counters. All
other creatures get two -1/-1 counters.