
: Add one mana of any color in your commander's color identity.
The dark nights of Valley hold no horrors for batfolk clerics and warriors.
Illustrated by Ioannis Fiore · Bloomburrow Commander · #127
2020-11-10
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}.
2020-11-10
If you don't have a commander, Arcane Signet's ability produces no mana.
2020-11-10
If you have two commanders, the ability adds one mana of any color in their combined color identities.