A Basic Pokemon Card of type Grass with the title Koga's Grimer and 50 HP of rarity Common from the set Gym Challenge.  It has the attack Sludge Grip with the cost Grass, the energy cost 1 with the description: If your opponent has any Benched Pokemon, flip a coin. If heads, choose 1 of your opponent's Benched Pokemon and switch it with the Defending Pokemon. The new Defending Pokemon is now Poisoned. It has the attack Sludge Toss with the cost Grass, Colorless, the energy cost 2 and the damage of 20. It has weakness against Psychic 2. 
Koga's Grimer