Pokemon TCG: Sun & Moon Cosmic Eclipse Elite Trainer Box - Rules of Play says:
Start your collection of this exciting expansion with the Sun & Moon—Cosmic Eclipse Elite Trainer Box. This collector's box contains all sorts of goodies that both collectors and players will appreciate. In addition to eight Sun & Moon—Cosmic Eclipse booster packs and loads of Energy cards, the set contains 65 card sleeves featuring the TAG TEAM trio of Arceus, Dialga, and Palkia. Accessories like dice and acrylic game markers will have you playing in style. There's even a player's guide filled with useful strategies and a card list.