Simic Signet
Artifact
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- CMC
- 2
- Mana cost
- Color identity
- GU
- Rarity
- uncommon
- Set
- Duskmourn: House of Horror Commander
- Price
- $0.35
- EDHREC rank
- #566
Simic Signet costs two mana to play and one to activate, turning any blue or green source into a mana of the other color — reliable fixing and ramp in one card. In Kinnan, Bonder Prodigy decks especially, it's an auto-include: Kinnan doubles the output of non-land mana sources, so that one-mana activation suddenly produces two.
Best Commanders
Commanders with the highest synergy

Kinnan, Bonder Prodigy
Kinnan, Bonder Prodigy's static ability doubles the output of nonland mana sources, which means Simic Signet produces two mana on activation instead of one — turning a utility rock into genuine acceleration.

Gimbal, Gremlin Prodigy
Gimbal, Gremlin Prodigy cares about artifacts entering the battlefield and triggering artifact synergies, so Simic Signet pulls double duty as both a ramp piece and an artifact that fuels Gimbal's engine on the turn it lands.

Rashmi and Ragavan
Rashmi and Ragavan wants to cast spells on curve every single turn, and Simic Signet smooths the blue-green pip requirements that let that engine fire consistently from turn three onward.

Morska, Undersea Sleuth
Morska, Undersea Sleuth runs a tight Simic curve that punishes missed mana drops, and Simic Signet is one of the cleanest ways to guarantee the right colors are available when the clue-generation loop needs to start moving.

Hakbal of the Surging Soul
Hakbal of the Surging Soul builds toward a wide Merfolk board and needs consistent green and blue mana to land lords and payoffs on time — Simic Signet is reliable enough fixing that nearly half of all Hakbal decks run it.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | legal |
| oathbreaker | legal |
Commander is where Simic Signet earns its slot — two-mana rocks that fix colors are staples in any Simic shell, and the one-mana activation cost means it contributes to the board the turn after it lands. In Pauper, it's a legitimate option for blue-green artifact or control shells that need color fixing on a budget. Legacy and Vintage have access to the full suite of fast mana and better rocks, so Simic Signet doesn't see competitive play there. Pioneer and Standard don't carry it, and Oathbreaker mirrors Commander's logic closely enough that the same inclusion reasoning applies.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.35 bulk tier
At $0.35, Simic Signet is bulk — you can pick up copies in a dime bin or as throw-ins without thinking twice. Bulk staples this broadly played tend to stay flat; don't expect movement in either direction.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.