Choose 1 of your opponent's Benched Pokémon. Put that Pokémon and all cards attached to it back into your opponent's hand.
Discard all Metal Energy attached to Palkia & Dialga LEGEND. Add the top 2 cards of your opponent's deck to his or her Prize cards.
Put this card from your hand onto your Bench only with the other half of Palkia & Dialga LEGEND.
When this Pokémon has been Knocked Out, your opponent takes 2 Prize cards.