Giratina 4

Choose 1 of your opponent's Benched Pokémon. This attack does 20 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) Flip a coin. If heads, prevent all effects of an attack, including damage, done to Giratina during your opponent's next turn. Damage:

Does 50 damage plus 10 more damage for each damage counter on the Defending Pokémon. Damage: 50+