Trawnyr, Arctic's Paladin

+1: Until end of turn, target creature cannot be blocked by creatures with power less then Trawnyr's loyalty.
-3: Tap target creature, then put 2 -1/-1 counters on it.
-12: Put 5 -1/-1 counters on and tap each creature you don't control. They don't untap during their controller's next untap step.