Wurmple

Grass 50 HP Stage: Basic Common

String Pull

Switch 1 of your opponent's Benched Pokémon with 1 of the Defending Pokémon. Your opponent chooses the Defending Pokémon to switch.

Poké-Body Poison Payback

If Wurmple is your Active Pokémon and is damaged by an opponent's attack (even if Wurmple is Knocked Out), the Attacking Pokémon is now Poisoned.