Pokémon Power Mind Games
Whenever your opponent plays a Trainer card, you may flip a coin. If heads, that card does nothing. Put it on top of your opponent's deck. This power can't be used if Slowking is Asleep, Confused, or Paralyzed.
Flip a coin. If heads, this attack does 20 damage plus 10 more damage and the Defending Pokémon is now Confused. If tails, this attack does 20 damage.