Step into the mystery of the Pokémon Card Game XY 'High-Class Pack THE BEST OF XY,' released in 2017. Unlike recent high-class packs, this set contains 15 cards per pack, including two holo cards. The rarity of the cards is a secret, not printed on them. The full art cards in this set, while resembling Super Rare (SR) cards, do not have the SR designation printed on them, adding to the intrigue for collectors.