Kingdra 8

Flip a coin. If heads, during your opponent's next turn, prevent all effects of attacks, including damage, done to Kingdra. Damage: 30

If this attack doesn't Knock Out the Defending Pokémon, and if there are any Pokémon on your opponent's Bench, choose 1 of them and switch it with the Defending Pokémon. Damage: 50