This BOX contains reprints of cards from the old boxes, ones that are commonly used by many players and can fit in to many decks, as well as containing some new cards that will be released in future BOXes or Structure Decks. Each pack costs 200 gems to purchase and contains 12 cards, with each pack guaranteed to have at least 1 SR or UR, along with 7 N and 4 R cards. Gem purchase of the packs is limited to 15 per person, and will not replenish even if you choose to reset the BOX.
Although the animation only shows 5 cards being pulled from each Pack, you can view all the cards you received from the obtained card list.
You can purchase more packs if you decide to do the In-App Purchases, and there is no limit to how many packs you can buy.