Jolteon

Poké-Power: Undevelop — Once during your turn (before your attack), you may devolve Jolteon and put Jolteon into your hand. This power can't be used if Jolteon is affected by a Special Condition. | Quick Attack (10+): Flip a coin. If heads, this attack does 10 damage plus 30 more damage. | Evolving Thunder (50): If Jolteon evolved from Eevee during this turn, this attack does 10 damage to each of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon).