A Stage 1 Pokemon Card of type Grass, Darkness with the title Dark Muk and 80 HP of rarity Rare evolved from Grimer from the set Team Rocket Returns.  It has the attack Slimy Water with the cost Colorless, Colorless, the energy cost 2 and the damage of 10 with the description: Does 10 damage times the number of Colorless Energy in the Defending Pokemon's Retreat Cost (after applying effects to the Retreat Cost). It has the attack Acidic Poison with the cost Grass, Colorless, the energy cost 2 and the damage of 10 with the description: The Defending Pokemon is now Burned and Poisoned. It has the ability Sticky Goo with the description: As long as Dark Muk is your Active Pokemon, your opponent pays ColorlessColorless more to retreat his or her Active Pokemon. It has weakness against Psychic 2. 
Dark Muk