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Seedborn Muse

Creature — Spirit

Untap all permanents you control during each other player's untap step.

CMC
5
Mana cost
{3}{G}{G}
Color identity
G
Rarity
rare
Set
Ninth Edition
Price
$13.40
EDHREC rank
#280
Buy on TCGplayer
Seedborn Muse card art
Seedborn Muse untaps all your permanents on each opponent's untap step, which in a four-player game means you're operating at roughly four times the mana and activated abilities of everyone else at the table. Pair it with Isochron Scepter or a sink like Thrasios, Triton Hero // Yoshimaru, Ever Faithful and the game ends on the spot — five mana is a reasonable price for that.

Best Commanders

Commanders with the highest synergy

01
Thrasios, Triton HeroYoshimaru, Ever Faithful

Thrasios, Triton Hero // Yoshimaru, Ever Faithful

75.3% of decks · synergy 0.65

Thrasios, Triton Hero // Yoshimaru, Ever Faithful runs Seedborn Muse as a near-mandatory piece: Thrasios's activated ability costs four mana and can fire on every opponent's turn, converting all that free mana directly into cards and land drops until you find a win condition.

02
Tevesh Szat, Doom of FoolsThrasios, Triton Hero

Tevesh Szat, Doom of Fools // Thrasios, Triton Hero

72.8% of decks · synergy 0.62

Tevesh Szat, Doom of Fools // Thrasios, Triton Hero plays the same Thrasios engine, and Seedborn Muse means Tevesh's sacrifice-fodder generation also recharges between turns, giving the deck both fuel and a draw engine that runs at full speed all the way around the table.

03
Kinnan, Bonder Prodigy

Kinnan, Bonder Prodigy

75.9% of decks · synergy 0.60

Kinnan, Bonder Prodigy already doubles mana from nonland sources, and Seedborn Muse untapping those sources on every opponent's turn turns that doubling into an obscene mana surplus — Kinnan's activated tutor ability can fire repeatedly in a single rotation without ever touching your own turn.

04
Omnath, Locus of Mana

Omnath, Locus of Mana

64.4% of decks · synergy 0.52

Omnath, Locus of Mana accumulates green mana across steps and phases, and Seedborn Muse effectively makes every opponent's untap step another window to bank mana, letting Omnath reach game-ending sizes before you even need to attack.

05
Yisan, the Wanderer Bard

Yisan, the Wanderer Bard

64.8% of decks · synergy 0.52

Yisan, the Wanderer Bard taps to tutor creatures at increasing verse-counter costs, and Seedborn Muse untapping him on each opponent's turn lets Yisan chain through multiple verse activations per round — what normally takes several turns collapses into a single rotation.

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

Commander is the only format where Seedborn Muse is genuinely broken — three opponents means three free untap steps per round, and almost any deck with activated abilities or tap effects scales into something oppressive. In Legacy and Vintage it's legal but irrelevant: five mana at sorcery speed for an effect that doesn't touch the board immediately is too slow for those formats' win conditions, and no competitive list there wants it. Oathbreaker can support it in the right shell, particularly with a planeswalker that has a repeatable plus or minus ability, though the smaller life totals and faster games narrow the window. Seedborn Muse is, for practical purposes, a Commander card.

Key Combos

Combo lines featuring this card

Budget Alternatives

Cheaper options that do most of the same work

Wilderness Reclamation untaps all your lands at the end of your turn only — not on opponents' turns — but costs two mana less and still doubles your effective mana if your deck is primarily land-based. Murkfiend Liege and Awakening are the closest functional substitutes for full-table untapping, though Awakening untaps everyone's permanents, which is a meaningful downside that Seedborn Muse avoids entirely.

Price Context

Current price

$13.40 mid tier

At $13.40, Seedborn Muse sits in the mid tier — expensive enough to feel in a budget build, cheap enough that it's a reasonable target purchase for any deck that wants it. It's seen multiple reprints and the price has stayed in this range, so there's no reason to wait on it if the deck calls for it.

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Sources

Mentioned

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