You can't have more than 1 card with the same name in your deck. If a card would go to the discard pile, put it in the Lost Zone instead.
Dance of the Ancients せんじんのまい
Once during your turn (before your attack), if this Pokémon is on your Bench, you may choose 2 of your Benched Pokémon and attach a Energy card from your discard pile to each of them. If you do, discard all cards from this Pokémon and put it in the Lost Zone.