Gardevoir & Sylveon-GX 204

Search your deck for up to 2 Fairy Energy cards and attach them to your Benched Pokémon in any way you like. Then, shuffle your deck. Damage:

Move any number of Energy from your Pokémon to your other Pokémon in any way you like. Damage: 150

If this Pokémon has at least 3 extra Fairy Energy attached to it (in addition to this attack's cost), your opponent shuffles their hand into their deck. (You can't use more than 1 GX attack in a game.) Damage: 200