Concussive Club

Equipped creature gets +3/+1.
When equipped creature deals combat damage to a creature, tap that creature. It doesn't untap during its controller's next untap step.
When equipped creature deals combat damage to a player or Planeswalker, put X pain counters on Concussive Club, where X is half the damage dealt to that player/Planeswalker (rounded down).
{u}{u}{r}, Remove 3 pain counters from Concussive Club: Counter target spell or ability.
Equip {u}{r}{r}