If you control a Background that grants an ability to commander creatures you own, and you own more than one commander creature, each of them will have that ability.
Burakos, Party Leader
Once the game begins, your two commanders are tracked separately. If you cast one, you won't have to pay an additional {2} the first time you cast the other. A player loses the game after having been dealt 21 combat damage from any one of them, not from both of them combined (although your Background won't usually be a creature anyway).
If your Commander deck has two commanders, you can include only cards whose own color identities are also found in your commanders' combined color identities.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Caroline Gariba
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
