From Wizards of the Coast. The Dominaria United Collector Booster Box contains 12 Dominaria United Collector Boosters and 1 Traditional Foil Box Topper card. Each Collector Booster contains 15 Magic: The Gathering cards and 1 Traditional Foil double-sided token, with a combination of 5-6 cards of rarity Rare or higher and 4-5 Uncommon, 4 Common, and 1 Land cards, with a total of 10-13 foil cards. Foil Borderless Mythic Rare Planeswalker in 2% of boosters.