Dark Muk (Team Rocket 41/82)
Pokémon Power Sticky Goo

As long as Dark Muk is your Active Pokémon, your opponent pays Colorless Colorless more to retreat his or her Active Pokémon. This power stops working while Dark Muk is Asleep, Confused, or Paralyzed.

Grass Grass
Sludge Punch

The Defending Pokémon is now Poisoned.