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Mox Opal

Legendary Artifact

Metalcraft — {T}: Add one mana of any color. Activate only if you control three or more artifacts.

CMC
0
Mana cost
{0}
Color identity
C
Rarity
mythic
Set
Arena Anthology 2
Price
—
EDHREC rank
#238
Buy on TCGplayer
Mox Opal card art
Mox Opal is a zero-mana artifact that taps for any color of mana the moment you hit three artifacts on board — in the right shell, that condition is met on turn one as often as not. The cost is real: it's dead in your opener if you can't hit metalcraft, and a Teferi, Time Raveler or similar hate piece shuts down the free-mana game entirely. Still, in artifact-dense Commander builds like Rograkh, Son of Rohgahh // Silas Renn, Seeker Adept, it's an auto-include with no serious competition at its slot.

Best Commanders

Commanders with the highest synergy

01
Rograkh, Son of RohgahhSilas Renn, Seeker Adept

Rograkh, Son of Rohgahh // Silas Renn, Seeker Adept

89.3% of decks · synergy 0.82

Rograkh, Son of Rohgahh // Silas Renn, Seeker Adept is the premier Mox Opal home — Rograkh enters as a free zero-cost creature, making metalcraft trivial to assemble alongside the artifact mana rocks this deck floods the board with. The result is a storm-style combo shell that routinely goes off on turn one or two.

02
Dargo, the ShipwreckerTymna the Weaver

Dargo, the Shipwrecker // Tymna the Weaver

85.4% of decks · synergy 0.81

Dargo, the Shipwrecker // Tymna the Weaver leans on sacrificing artifacts to reduce Dargo's cost, so Mox Opal pulls double duty: it fuels colored mana early and feeds the sacrifice engine that makes Dargo cheap or free. The synergy is structural, not incidental.

03
Malcolm, Keen-Eyed NavigatorVial Smasher the Fierce

Malcolm, Keen-Eyed Navigator // Vial Smasher the Fierce

66.3% of decks · synergy 0.59

Malcolm, Keen-Eyed Navigator // Vial Smasher the Fierce runs Mox Opal as part of a dense artifact package that enables fast, consistent mana across three colors. It's less central here than in the dedicated storm builds, but metalcraft is easy to hit and the free mana accelerates the pirate-spell gameplan meaningfully.

04
Kinnan, Bonder Prodigy

Kinnan, Bonder Prodigy

55.0% of decks · synergy 0.51

Kinnan, Bonder Prodigy doubles the output of nonland mana sources, so Mox Opal producing one mana becomes two — a multiplier on a zero-cost card is exactly the kind of asymmetry Kinnan shells are built to exploit. It's in over half of all Kinnan lists for that reason alone.

05
Arcum Dagsson

Arcum Dagsson

45.8% of decks · synergy 0.36

Arcum Dagsson needs artifacts on the board to activate, and Mox Opal is both a cheap artifact that enables his ability and a mana source that helps cast whatever he tutors up. The inclusion rate reflects how naturally it fits an all-artifact game plan.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander legal
legacy legal
modern legal
pioneer not legal
standard not legal
vintage legal
pauper not legal
oathbreaker legal

Mox Opal is legal in Commander, Legacy, Vintage, and Oathbreaker — banned in Modern since 2020, and never part of Pioneer or Standard. In Vintage it sits behind the Power Nine in raw speed but contributes to artifact storm and Shops-adjacent builds. In Legacy it sees play in Echo-style combo decks and artifact-based shells where metalcraft is a non-issue. Commander is where Mox Opal has its largest footprint by volume: artifact-heavy cEDH decks treat it as a staple, and the format's multiplayer pace means the metalcraft condition is almost always live by the time it matters.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Mox Opal sits at the premium end of the Commander staple market — pricing fluctuates and can vary significantly between printings and versions, so check current listings on Scryfall or TCGPlayer before buying. Whether it's worth picking up depends entirely on whether you're building an artifact-dense deck; it earns its price in that context and is dead weight in anything else.

Explore

Sources

Mentioned

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.