Card Codex

M:tG card similarity search

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
Winnowing Forces Creature — Elf Warrior Winnowing Forces's power and toughness are each equal to the number of lands you control. */*
Titania's Song 3GEnchantment Each noncreature artifact loses all abilities and becomes an artifact creature with power and toughness each equal to its mana value. If Titania's Song leaves the battlefield, this effect continues until end of turn.
Octavia, Living Thesis 8UULegendary Creature — Elemental Octopus This spell costs {8} less to cast if you have eight or more instant and/or sorcery cards in your graveyard. Ward {8} Magecraft — Whenever you cast or copy an instant or sorcery spell, target creature has base power and toughness 8/8 until end of turn. 8/8
Tetsuko Umezawa, Fugitive 1ULegendary Creature — Human Rogue Creatures you control with power or toughness 1 or less can't be blocked. 1/3
Fluxcharger 2URCreature — Weird Flying Whenever you cast an instant or sorcery spell, you may switch Fluxcharger's power and toughness until end of turn. 1/5
Control Win Condition 4UUCreature — Whale This spell can't be countered. Shroud Control Win Condition's power and toughness are each equal to the number of turns you've taken this game. (If this is in your deck, please keep track of your turns. This means you, Mark.) */*
Revenant 4BCreature — Spirit Flying Revenant's power and toughness are each equal to the number of creature cards in your graveyard. */*
Gaea's Liege 3GGGCreature — Avatar As long as Gaea's Liege isn't attacking, its power and toughness are each equal to the number of Forests you control. As long as Gaea's Liege is attacking, its power and toughness are each equal to the number of Forests defending player controls. {T}: Target land becomes a Forest until Gaea's Liege leaves the battlefield. */*
Broodstar 8UUCreature — Beast Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) Flying Broodstar's power and toughness are each equal to the number of artifacts you control. */*
Gilt-Leaf Winnower 3BBCreature — Elf Warrior Menace (This creature can't be blocked except by two or more creatures.) When Gilt-Leaf Winnower enters the battlefield, you may destroy target non-Elf creature whose power and toughness aren't equal. 4/3
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