Qwilfish

Ability · Counterattack Quills

If this Pokémon is your Active Pokémon and is damaged by an opponent's attack (even if this Pokémon is Knocked Out), put 2 damage counters on the Attacking Pokémon.

C · C

Your opponent's Active Pokémon is now Poisoned.

Weakness: Grass · Resistance: none · Retreat: 1