Choose 1 of your opponent's Pokémon. This attack does 10 damage to that Pokémon. Don't apply Weakness and Resistance for this attack. (Any other effects that would happen after applying Weakness and Resistance still happen.)
Once during your turn (before your attack), you may flip a coin. If heads, the Defending Pokémon is now Asleep; if tails, your Active Pokémon is now Asleep. This power can't be used if Drowzee is Asleep, Confused, or Paralyzed.The Defending Pokémon is now Asleep.