Butterfree 9

Flip a coin. If heads, during your opponent's next turn, prevent all effects of attacks, including damage, done to Butterfree. If tails, this attack does nothing (not even damage). Damage: 30

Flip a coin. If heads, the Defending Pokémon is now Paralyzed. If tails, the Defending Pokémon is now Poisoned. Damage: 20