Cunning Perception

Whenever a creature you control attacks put a perception counter on that creature.
Remove two perception counters from creatures
you control: Cunning Perception deals 2 damage
to any target, put a cunning counter on Cunning
Perception. Activate this ability only any time you
could cast a sorcery.
Remove three cunning counters from Cunning Perception: Draw three cards then discard a card.