• 12 Wilds of Eldraine Collector Booster Packs • 15 Magic cards + 1 foil token in each Booster Pack • 10-12 Traditional Foil cards in every pack • At least 3 special Borderless cards per booster • 5 cards of rarity Rare or higher in every pack
Starting with The Brothers' War, Buy-a-Box Promos will only be available for in-store pick-ups and purchase while supplies last as stated in Wizards of the Coast's article here.