EachĀ March of the MachineĀ -Ā Set Booster Box contains:
ā¢Ā 30Ā March of the Machine Set Booster Packs ā¢Ā 12 Magic: The Gathering Cards + 1 token/ad card or Helper card or a Card from "the List" ā¢ 1-5 cards of rarity Rare or higher per Booster Pack ā¢ 3-8 Uncommons, 2-7 Commons, and 1 Land cards per Pack ā¢Ā 1 Traditional Foil card and Art Card in each Booster Pack
Starting with The Brothers' War, Buy-a-Box PromosĀ will only be availableĀ for in-store pick-ups and purchaseĀ while supplies lastĀ as stated in Wizards of the Coast's article here.