Muk ex

Poke-BODY — Toxic Gas: As long as Muk ex is your Active Pokémon, ignore all Poké-Powers and Poké-Bodies other than Toxic Gas.

Poison Breath (10): The Defending Pokémon is now Poisoned.

Slimy Water (40+): Does 40 damage plus 10 more damage for each Colorless Energy in the Defending Pokémon's Retreat Cost (after applying effects to the Retreat Cost).