Choose a Background is a variant of the partner ability. You may have two commanders if one of them is a legendary creature with the choose a background ability and the other is a legendary Background enchantment. Backgrounds and cards with choose a Background do not interact with cards which have any other partner ability.
Zellix, Sanity Flayer
You can choose two commanders that are the same color or colors.
If your commander loses the choose a Background ability or stops being a Background during the game, as appropriate, it is still your commander.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Slawomir Maniak
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
