Double Crisis set of XY series

Team Aqua's Muk
Stage 1
HP110
Evolves From: Team Aqua's Grimer
Pokédex No.89
AbilitySludge Festival
The Retreat Cost of each Pokémon in play (except for Team Aqua Pokémon) is Colorless more.
Pester
If your opponent's Active Pokémon is affected by a Special Condition, this attack does 60 more damage.