MTG · Card

◇ Catalog #297

Biomass Mutation

soc·#297·rare·nonfoil

Illus. Dan Murayama Scott

View concept →

—

in vault

—

for trade

—

wishlisted

Apr '26

3 mo ago

Value

$0.25+$0 (+4.2%)

30 days high $0.26 · low $0.24

NM$0.25

LP—

MP—

HP—

DMG—

$0.23–$0.26modeled

30 days ago
today

90-dayhigh $0.31low $0.05range 520.0%n 49

Where to buy / sell

TCGplayer eBay sold Cardmarket EU Star City

Search links · prices vary by venue

Buy this card

Played in EDH

EDHrec rank #4,905 · Niche pick

Variants

Nonfoil$0.25

Gameplay

Instant

Creatures you control have base power and toughness X/X until end of turn.

"A regression to ancient forms? A glimpse of future evolutions? Or a fleeting alteration of the present?" —Vorel of the Hull Clade

Legalities

tlrlegal

duellegal

brawlnot legal

pennylegal

PreDH

Rulings · 2

2013-01-24wotc

Choosing 0 as the value for X will likely cause creatures you control to become 0/0 and be put into the graveyard.

2013-01-24wotc

Biomass Mutation overwrites any effects that set the power and/or toughness of a creature you control to a specific value. Effects that modify power and/or toughness but don't set them to a specific value (like the one created by Giant Growth), power/toughness changes from counters, and effects that switch a creature's power and toughness will continue to apply. For example, say you control a 1/1 creature that's getting +4/+2 from an Aura, has a +1/+1 counter on it, and is affected by an effect that switches its power and toughness. This creature is 4/6. If you cast Biomass Mutation with X equal to 4, the creature would become 7/9 (4/4, +4/+2 from the Aura, +1/+1 from the counter, then switch power and toughness).

Context

Last observed on Scryfall 2 months ago at $0.25. Over the trailing 90 days the price moved between $0.05 and $0.31 across 49 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.

This printing is one of 2 catalogued treatments from SOC — the lineup includes Nonfoil alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.

Card #297 of *Secrets of Strixhaven Commander*, the set that shipped alongside the April 2026 Secrets of Strixhaven Commander release.

Card type: Instant, color identity green/blue, printed at rare. Rares occupy the bottom-of-pack rare slot in standard boosters. Mana cost: {X}{G/U}{G/U} (2 converted).

Legal in Pioneer, Modern, Legacy, Vintage, and Commander.

EDHrec ranks this card #4,905 in Commander, putting it in the niche-pick tier of the format's playable pool.

Illustrated by Dan Murayama Scott. Rarix catalogs 1,317 other cards credited to this artist.