Spooks, Collector of Teeth

Flying
When Spooks, Collector of Teeth enters the
battlefield, target opponent reveals their hand,
for each Creature among cards revealed,
put a teeth counter on Spooks.
{2}, Remove a teeth counter: Spooks gains you
choice of Deathtouch, Double Strike, or Haste
{u}{r}{b}, Remove three teeth counters:
Return Spooks to your hand