: Add one mana of any color in your commander's color identity.
.Arcane Signet gives Commander decks a straightforward way to accelerate while covering their colors. For two mana, it provides a reusable source of any color in your commander’s color identity, making it useful when the opening turns ask for several different colored spells.
A first-turn Sol Ring can pay for Signet immediately, leaving the Signet available to produce colored mana. Without that fast opening, casting it on turn two can help reach a four-mana commander on turn three with normal land drops. Unlike a mana creature, an ordinary Signet can use its tap ability on the turn it enters.
Kinnan, Bonder Prodigy adds another mana of the type Signet produces, increasing the return from each activation. Artifact combo decks can also use Signet alongside Sol Ring, Isochron Scepter, and an imprinted Dramatic Reversal. The two mana rocks produce three mana, Scepter costs two to activate, and Reversal untaps them all, leaving surplus mana from each completed cycle.
Its color options come from your commander’s identity rather than the lands or creatures currently on the battlefield. A colorless commander gives it no color to produce, so it is not a universal choice for every deck. It also remains vulnerable to artifact removal. Include enough lands to function when a mana rock is destroyed, and use Signet where both the acceleration and reliable access to your deck’s colors improve your early turns.
