Muk ex

Poké-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). | When Pokémon-ex has been Knocked Out, your opponent takes 2 Prize cards.