Croagunk

Ability: Lost Venom

Once during your turn, if this Croagunk is Knocked Out by damage from an opponent's attack, you may put it and all cards attached to it into the Lost Zone instead of the discard pile. If you do, put 3 damage counters on the Attacking Pokémon.

Poisonous Jab • 20

The Defending Pokémon is now Poisoned.