As long as Cradily is your Active Pokémon, your opponent's Pokémon can't retreat.
Before using this effect, you may switch the Defending Pokémon with 1 of your opponent's Benched Pokémon, if any. The Defending Pokémon is now Poisoned.
Remove 2 damage counters from Cradily (remove 1 if there is only 1).
