Card Codex

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17 May 2024: Card library updated.

Biomass Mutation

XG/UG/U · Instant

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

Similar cards

Color identity:
NameManaTypeText
Dracoplasm URCreature — Shapeshifter Flying As Dracoplasm enters the battlefield, sacrifice any number of creatures. Dracoplasm's power becomes the total power of those creatures and its toughness becomes their total toughness. {R}: Dracoplasm gets +1/+0 until end of turn. 0/0
Shadow Puppeteers 6UCreature — Faerie Wizard Flying, ward {2} When Shadow Puppeteers enters the battlefield, create two 1/1 black Faerie Rogue creature tokens with flying. Whenever a creature you control with flying attacks, you may have it become a red Dragon with base power and toughness 4/4 in addition to its other colors and types until end of turn. 4/4
Oko, Thief of Crowns 1GULegendary Planeswalker — Oko [+2]: Create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.") [+1]: Target artifact or creature loses all abilities and becomes a green Elk creature with base power and toughness 3/3. [−5]: Exchange control of target artifact or creature you control and target creature an opponent controls with power 3 or less. Loyalty 4
Stern Scolding UInstant Counter target creature spell with power or toughness 2 or less.
Beanstalk Giant 6GCreature — Giant Beanstalk Giant's power and toughness are each equal to the number of lands you control. */*
Drift of the Dead 3BCreature — Wall Defender (This creature can't attack.) Drift of the Dead's power and toughness are each equal to the number of snow lands you control. */*
Ixidron 3UUCreature — Illusion As Ixidron enters the battlefield, turn all other nontoken creatures face down. (They're 2/2 creatures.) Ixidron's power and toughness are each equal to the number of face-down creatures on the battlefield. */*
Belligerent Yearling 1RCreature — Dinosaur Trample Whenever another Dinosaur enters the battlefield under your control, you may have Belligerent Yearling's base power become equal to that creature's power until end of turn. 3/2
Surge Engine 2Artifact Creature — Construct Defender {U}: Surge Engine loses defender and gains "This creature can't be blocked." {2}{U}: Surge Engine becomes blue and has base power and toughness 5/4. Activate only if Surge Engine doesn't have defender. {4}{U}{U}: Draw three cards. Activate only if Surge Engine is blue and only once. 3/2
Cogwork Progenitor 1WArtifact Creature — Gnome At the beginning of your end step, you may exile another artifact you control or an artifact card in your graveyard. If you do, seek an artifact card. That card perpetually has base power and toughness 1/1 and becomes a Gnome creature in addition to its other types. 2/2
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