Mew ex (EX Holon Phantoms 100/110)
Poké-POWER Psychic Vision

Once during your turn (before your attack), if Mew ex is on your Bench, you may look at your opponent's hand.

Colorless Colorless
Super Psy Bolt
Psychic Colorless Colorless
Devo Crush

You may discard 2 Energy attached to Mew ex. If you do, you may remove the highest Stage Evolution card from the Defending Pokémon and shuffle that card into your opponent's deck.

Card rule

When Pokémon-ex has been Knocked Out, your opponent takes 2 Prize cards.