Arcane Signet
Artifact
: Add one mana of any color in your commander's color identity.
"To put it simply, the knowledge of the Ancients is sealed within each orb. That knowledge not only connects us to the planet... it allows us to tap into her power." —Sephiroth
Randy Gallegos
Rulings
If your commander is a card that has no colors in its color identity, Arcane Signet's ability produces no mana. It doesn't produce {C}.
(wotc • 2020-11-10)
If you don't have a commander, Arcane Signet's ability produces no mana.
(wotc • 2020-11-10)
If you have two commanders, the ability adds one mana of any color in their combined color identities.
(wotc • 2020-11-10)
Rulings
If your commander is a card that has no colors in its color identity, Arcane Signet's ability produces no mana. It doesn't produce {C}.
(wotc • 2020-11-10)
If you don't have a commander, Arcane Signet's ability produces no mana.
(wotc • 2020-11-10)
If you have two commanders, the ability adds one mana of any color in their combined color identities.
(wotc • 2020-11-10)