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Biorhythm

Biorhythm

Sorcery

rare

Each player's life total becomes the number of creatures they control.

$34.44 ✦ $59.99View on Scryfall →

Semantic Tags

Cares about casting noncreature spells — magecraft, prowess-adjacent strategies.

Storm count strategies — casting many spells in a single turn for storm triggers.

Tribalvector

Cares about creature types — lords, type-matters effects, and changeling.

Format Legality

commanderlegal
oathbreakerbanned
modernlegal
pioneernot legal
standardnot legal
legacylegal
vintagelegal
paupernot legal
historicnot legal
explorernot legal
alchemynot legal

Price history

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Printings (3)

SetRarityTCGplayerCard KingdomCardmarket
Ninth Edition#231rare···
Ninth Edition#231★rare···
Onslaught#247rare···

Rulings

2004-10-04

If a player controls no creatures when this resolves, their life total will become zero and they will lose the game.

2004-10-04

This spell causes the player to lose or gain enough life to change to the new life total.