Rules glossary
903.5 Each Commander deck is subject to the following deck construction rules.
- 903.5a Each deck must contain exactly 100 cards, including its commander. In other words, the minimum deck size and the maximum deck size are both 100.
- 903.5b Other than basic lands, each card in a Commander deck must have a different English name. For the purposes of deck construction, cards with interchangeable names have the same English name (see rule 201.3). (refs: 201.3)
- 903.5c A card can be included in a Commander deck only if every color in its color identity is also found in the color identity of the deck’s commander. Example: Wort, the Raidmother is a legendary creature with mana cost {4}{R/G}{R/G}. Wort’s color identity is red and green. Each card in a Wort Commander deck must be only red, only green, both red and green, or have no color. Each mana symbol in the mana cost or rules text of a card in this deck must be only red, only green, both red and green, or have no color.
- 903.5d A card with a basic land type may be included in a Commander deck only if each color of mana it could produce is included in the commander’s color identity. Example: Wort, the Raidmother’s color identity is red and green. A Wort Commander deck may include land cards with the basic land types Mountain and/or Forest. It can’t include any land cards with the basic land types Plains, Island, or Swamp.
- 903.5e Commander games do not use sideboards.