Is Biomass Mutation good in Commander?

Biomass Mutation in Commander — Combos, Decks & Price

Biomass Mutation turns a board of tokens or small creatures into a lethal alpha strike the turn you cast it — the X in the cost scales directly into the power and toughness of every creature you control simultaneously. Zimone, Infinite Analyst decks are the canonical home because they can generate arbitrarily large mana and a wide board in the same turn, making Biomass Mutation the one-card kill shot the engine was building toward.

Best Commanders

Commanders with the highest synergy

01

Zimone, Infinite Analyst

44.4% of decks · synergy 0.40

Zimone, Infinite Analyst generates unbounded mana and creature tokens in one loop, and Biomass Mutation converts that setup into an immediate win by dumping the excess mana into X and swinging for lethal. It's in 44% of Zimone decks because it's often the cheapest, fastest way to close out the turn the engine goes infinite.

02

Edric, Spymaster of Trest

44.4% of decks · synergy 0.40

Edric, Spymaster of Trest builds a wide board of cheap evasive creatures designed to connect repeatedly, and Biomass Mutation lets that swarm skip the incremental damage plan and just kill a player outright when enough mana is available. The instant speed matters here — Edric decks can wait until the declare-attackers step to commit.

03

Kadena, Slinking Sorcerer

20.8% of decks · synergy 0.18

Kadena, Slinking Sorcerer produces a board of morphs and face-down creatures that are individually unimpressive, and Biomass Mutation solves that problem wholesale by setting every creature's base stats to a relevant number regardless of what's hiding underneath. It's a clean way to punish opponents who don't answer the board before you untap.

04

Zaxara, the Exemplary

16.8% of decks · synergy 0.14

Zaxara, the Exemplary wants X spells for multiple reasons — it makes Hydra tokens keyed to X — so Biomass Mutation pulls double duty as a mana sink that both creates a sizeable token and pumps the existing board. In 17% of Zaxara decks, it functions as both a late-game mana dump and a finisher in one card.

Format Analysis

Where it lives, where it can’t

Format	Verdict
commander	legal
legacy	legal
modern	legal
pioneer	legal
standard	not legal
vintage	legal
pauper	not legal
oathbreaker	legal

Biomass Mutation is legal in Commander, Legacy, Modern, Pioneer, Vintage, and Oathbreaker, but it's almost exclusively a Commander card in practice. In 60-card formats it requires a critical mass of creatures in play at instant speed to be worthwhile, and dedicated token or go-wide shells already have stronger payoffs at that slot — Overrun effects at sorcery speed tend to be more mana-efficient in those contexts. Commander is where Biomass Mutation shines because the longer game means wider boards, larger mana pools, and more frequent situations where you need a one-shot kill at instant speed rather than a steady pressure card. In Oathbreaker it's situationally playable in the same go-wide shells, but the 20-life format demands you go bigger faster, and Biomass Mutation rewards patience the format doesn't always allow.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Pricing data isn't available for Biomass Mutation at the moment, so check Scryfall or your preferred retailer for the current market rate. Historically it's been a bulk-to-low-end card given its narrow application, so it's rarely a significant budget concern for the Commander decks that want it.