When Pokémon-ex has been Knocked Out, your opponent takes 2 Prize cards.
Once during your turn (before your attack), you may choose 1 of the Defending Pokémon and switch it with 1 of your opponent's Benched Pokémon. Your opponent chooses the Benched Pokémon to switch. This power can't be used if Mightyena ex is affected by a Special Condition.
If the Defending Pokémon is a Stage 2 Evolved Pokémon, this attack does 50 damage plus 40 more damage.