
Artifact
: Add one mana of any color in your commander's color identity.

Premier 2-mana rock producing colorless ramp in every deck.

Two-mana rock that fixes colors based on opponents' lands.

Two-mana rock that can cash in for a card later.

Two-mana dual-color rock for fixing and ramp.

Two-mana any-commander-color rock that draws a card when sacrificed.

Two-mana rock that fixes one chosen color.

Three-mana fixer giving lands all colors plus mana itself.
→ Infinite creature tokens, Infinite ETB, Infinite LTB
→ Infinite blinking, Infinite creature tokens, Infinite ETB
→ Infinite magecraft triggers, Infinite scry, Infinite storm count
→ Infinite creature tokens, Infinite ETB, Infinite magecraft triggers
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 .
If you have two commanders, the ability adds one mana of any color in their combined color identities.
If you don't have a commander, Arcane Signet's ability produces no mana.