Naganadel & Guzzlord GX

Once during your turn (before your attack), you may discard a Pokémon from your hand. If you do, heal 60 damage from this Pokémon.

Psychic, Darkness, Colorless ·

Colorless · Turn all of your Prize cards face up. (Those Prize cards remain face up for the rest of the game.) If this Pokémon has at least 1 extra Psychic Energy and 1 extra Darkness Energy attached to it (in addition to this attack's cost), take 2 Prize cards. (You can't use more than 1 GX attack in a game.)