Attach this card to 1 of your Pokémon in play. That Pokémon may use this card's attack instead of its own. At the end of your turn, discard Mystery Plate γ.
If your opponent has 5 or more Prizes, shuffle your hand into your deck and then draw 6 cards. If your opponent has exactly 2 Prizes, choose 1 of your opponent's Evolved Pokémon. Your opponent puts the top card on that Evolved Pokémon on the bottom of his or her deck. (This counts as devolving that Pokémon.)