Suicune

Said to be the reincarnation of north winds, it can instantly purify filthy, murky water.

Pokemon Power — Crystal Body: Prevent all effects of your opponent's attacks, other than damage, done to Suicune. This power stops working while Suicune is Asleep, Confused, or Paralyzed.

Aurora Wave (30): Flip 2 coins. If both are heads, the Defending Pokémon is now Paralyzed. If only 1 is heads, the Defending Pokémon is now Asleep.