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
Pack Rat 1BCreature — Rat Pack Rat's power and toughness are each equal to the number of Rats you control. {2}{B}, Discard a card: Create a token that's a copy of Pack Rat. */*
Karn, Legacy Reforged 5Legendary Artifact Creature — Golem Karn, Legacy Reforged's power and toughness are each equal to the greatest mana value among artifacts you control. At the beginning of your upkeep, add {C} for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end. */*
Splinterfright 2GCreature — Elemental Trample Splinterfright's power and toughness are each equal to the number of creature cards in your graveyard. At the beginning of your upkeep, mill two cards. */*
Rubblehulk 4RGCreature — Elemental Rubblehulk's power and toughness are each equal to the number of lands you control. Bloodrush — {1}{R}{G}, Discard Rubblehulk: Target attacking creature gets +X/+X until end of turn, where X is the number of lands you control. */*
Dauntless Dourbark 3GCreature — Treefolk Warrior Dauntless Dourbark's power and toughness are each equal to the number of Forests you control plus the number of Treefolk you control. Dauntless Dourbark has trample as long as you control another Treefolk. */*
Chimeric Mass XArtifact Chimeric Mass enters the battlefield with X charge counters on it. {1}: Until end of turn, Chimeric Mass becomes a Construct artifact creature with "This creature's power and toughness are each equal to the number of charge counters on it."
Unliving Psychopath 2BBCreature — Zombie Assassin {B}: Unliving Psychopath gets +1/-1 until end of turn. {B}, {T}: Destroy target creature with power less than Unliving Psychopath's power. 0/4
Spark Rupture 2WEnchantment When Spark Rupture enters the battlefield, draw a card. Each planeswalker with one or more loyalty counters on it loses all abilities and is a creature with power and toughness each equal to the number of loyalty counters on it.
Old Man Willow 2BGLegendary Creature — Treefolk Old Man Willow's power and toughness are each equal to the number of lands you control. Whenever Old Man Willow attacks, you may sacrifice another creature or a token. When you do, target creature an opponent controls gets -2/-2 until end of turn. */*
Body of Knowledge 3UUCreature — Avatar Body of Knowledge's power and toughness are each equal to the number of cards in your hand. You have no maximum hand size. Whenever Body of Knowledge is dealt damage, draw that many cards. */*
Page 37