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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
Relic's Roar UInstant Until end of turn, target artifact or creature becomes a Dinosaur artifact creature with base power and toughness 4/3 in addition to its other types.
Creepy Puppeteer 3RCreature — Human Rogue Haste Whenever Creepy Puppeteer attacks, if you attacked with exactly one other creature this combat, you may have that creature's base power and toughness become 4/3 until end of turn. 4/3
Sludge Monster 3UUCreature — Horror Whenever Sludge Monster enters the battlefield or attacks, put a slime counter on up to one other target creature. Non-Horror creatures with slime counters on them lose all abilities and have base power and toughness 2/2. 5/5
Bedrock Tortoise 3GCreature — Turtle As long as it's your turn, creatures you control have hexproof. Each creature you control with toughness greater than its power assigns combat damage equal to its toughness rather than its power. 0/6
Graaz, Unstoppable Juggernaut 8Legendary Artifact Creature — Juggernaut Juggernauts you control attack each combat if able. Juggernauts you control can't be blocked by Walls. Other creatures you control have base power and toughness 5/3 and are Juggernauts in addition to their other creature types. 7/5
Ancient Lumberknot 2BGCreature — Treefolk Each creature you control with toughness greater than its power assigns combat damage equal to its toughness rather than its power. 1/4
Mimic 2Artifact — Treasure {T}, Sacrifice Mimic: Add one mana of any color. {2}: Mimic becomes a Shapeshifter artifact creature with base power and toughness 3/3 until end of turn.
Dire Mimic 2Artifact — Treasure Flash {T}, Sacrifice Dire Mimic: Add one mana of any color. {3}: Dire Mimic becomes a Shapeshifter artifact creature with base power and toughness 5/5 until end of turn.
Werewolf Pack Leader GGCreature — Human Werewolf Pack tactics — Whenever Werewolf Pack Leader attacks, if you attacked with creatures with total power 6 or greater this combat, draw a card. {3}{G}: Until end of turn, Werewolf Pack Leader has base power and toughness 5/3, gains trample, and isn't a Human. 3/3
Zopandrel, Hunger Dominus 5GGLegendary Creature — Phyrexian Horror Reach At the beginning of each combat, double the power and toughness of each creature you control until end of turn. {G/P}{G/P}, Sacrifice two other creatures: Put an indestructible counter on Zopandrel, Hunger Dominus. ({G/P} can be paid with either {G} or 2 life.) 4/6
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