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Biorhythm

Green

4 printings listed in our catalog, from newest to oldest.

Biorhythm, Secret Lair Countdown printing
Secret Lair Countdown SLC · No. 58 2026-11-02

Card text

{6}{G}{G}
Sorcery
Each player's life total becomes the number of creatures they control.
"You know we haven't done enough research into the effect of the cosmic rays! They might kill us all out in space!" —Ben Grimm
EDHREC rank #9310 Rare Not on the Reserved List
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The 4 printings

All, with their prices ↓

Standard ∅ Not legal
Pioneer ∅ Not legal
Modern ✓ Legal
Legacy ✓ Legal
Vintage ✓ Legal
Pauper ∅ Not legal
Commander ✓ Legal
Oathbreaker ✗ Banned
Brawl ∅ Not legal
Historic ∅ Not legal
Timeless ∅ Not legal
Alchemy ∅ Not legal
Explorer ∅ Not legal
Gladiator ∅ Not legal
Penny ✓ Legal
Duel ✓ Legal

Official rulings

2 rulings · in English, source Scryfall

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

2004-10-04 · Wizards of the Coast

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

2004-10-04 · Wizards of the Coast

All printings

Biorhythm, Secret Lair Countdown printing
Secret Lair Countdown
SLC · #58
Rare
∅ No QC price
Biorhythm, Ninth Edition printing
Ninth Edition
9ED · #231★
Rare
∅ No QC price
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