Historical Rules · 23 July 2021
Rule 903.13f
Official source text from the 23 July 2021 Rules release
Commander Draft deck construction follows the same rules as Commander deck construction (see rule 903.5) with two exceptions: (1) A player’s deck must contain at least 60 cards. There is no maximum deck size. (2) A player’s deck may include any number of cards from that player’s card pool with the same name.