• 30 Wilds of Eldraine Set Booster Packs • 12 Magic: the Gathering cards each Booster Pack • 1-5 Rare or higher in each Booster Pack • 3-7 Uncommon and 3-6 Common Cards Each Booster Pack • 1 Land Card (33% Chance for a Full-Art Land) • At least 1 Special Borderless card of rarity Uncommon or higher • 1 Traditional Foil card • 1 Token/Ad/Helper card w/ a 25% from the List card or Universe Beyond card
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.