The main set contains 254 cards and includes randomly inserted premium versions of all cards. Additional cards are found in the set's collector boosters, planeswalker decks and brawl decks. A unique Buy-a-Box promotional card is also considered to be part of the set. Cards with alternate card frames have another card number than the original version. Both regular and foil versions of these cards may be found in the collector boosters.
The set features five special Nyx-inspired full-art constellation basic lands (one per pack). The non-constellation basic lands are only found in supplemental products. These regular-border lands depict the "Above and Below" of Theros and its underworld. Besides the five basic lands, there are 11 constellation showcase cards. These are all the gods and demigods.
A Booster Box contains 36 Draft packs