Undevelop (Poké-Power)

Once during your turn (before your attack), you may devolve Vaporeon and put Vaporeon into your hand. This power can't be used if Vaporeon is affected by a Special Condition.

Does 10 damage to 1 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Evolving Aqua

Damage: NULL

Choose 1 of your opponent's Pokémon that has any damage counters on it. This attack does 40 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) If Vaporeon evolved from Eevee during this turn, this attack does 60 damage instead.