Koga's Muk (G2 26)
Pokémon Power
Energy Drain
If an opponent's attack does damage to Koga's Muk (even if Koga's Muk is Knocked Out), flip a coin. If heads and if it has any, choose 1 Energy card attached to the attacking Pokémon and discard it. This power can't be used if Koga's Muk is already Asleep, Confused, or Paralyzed when your opponent attacks.
Sludge Whirlpool
40
weakness: x2
resistance: none
retreat cost: 3