Every pack includes a combination of 1–5 card(s) of rarity Rare or higher and 3–7 Uncommon, 3–6 Common, and 1 Land cards. Traditional Foil Land replaces basic land in 20% of Set Boosters. Foil-Stamped Signature Art Card replaces Art Card in 10% of Set Boosters. Traditional Foil Borderless Mythic Rare Planeswalker in <1% of boosters.

A booster set contains 14 Magic: the Gathering cards from The Brothers' War:

- 1 Rare or Mythic rare.
- 1 Retro or Schematic artifact card.
- 1 Foil card, can be any rarity.
- 2 Wild cards (  any rarity including borderless, Transformers, retro or schematic artifacts, Jumpstart or Commander cards )
- 3 Uncommons.
- 3 Commons.
- 1 Basic land or mecha basic land with a chance of foil.
- 1 The Brothers' War Art Card.
- 1 card from The List OR a Token, OR advertising card, Or helper card.