Poké-BODY: Toxic Gas
As long as Muk ex is your Active Pokémon, ignore all Poké-Powers and Poké-Bodies other than Toxic Gas.
[G] Poison Breath: 10
The Defending Pokémon is now Poisoned.
[G][G][C] Slimy Water: 40+
Does 40 damage plus 10 more damage for each [C] 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.