If this Baby Pokémon is your Active Pokémon and your opponent tries to attack, your opponent flips a coin (before doing anything else required in order to use that attack). If tails, your opponent's turn ends without an attack.
Draw 3 cards. This Pokémon is now Asleep.
The Defending Pokémon's Weakness is now until the end of your next turn. (The amount of Weakness doesn't change.)