Biorhythm
Biorhythm Price Summary
As of Aug 7, 2026, the cheapest tracked printing of Biorhythm is $33.68 (9ED #231), and the most expensive is $172.91 (ONS #247, Foil). The benchmark price (cheapest playable nonfoil) is $37.34, up 10.9% over 7 days, up 14.2% over 30 days, up 31.1% over 90 days. All-time tracked high: $38.63 (2026).
Biorhythm Printings & Prices
Biorhythm has 3 tracked printings across 2 sets, in nonfoil and foil finishes.
Sell Biorhythm: Buylist Offers
Card Kingdom currently pays $125.00 cash for ONS #247 (Foil); the retail-buylist spread on that printing is 50% (wide).
| Buyer | Printing | Finish | Cash offer | Retail | Spread |
|---|---|---|---|---|---|
| Card Kingdom | ONS #247 | Foil | $125.00 | $249.99 | 50% |
| starcitygames | ONS #247 | Foil | $120.00 | — | — |
| CoolStuffInc | ONS #247 | Foil | $70.00 | — | — |
| starcitygames | ONS #247 | Nonfoil | $20.00 | — | — |
| Card Kingdom | ONS #247 | Nonfoil | $19.50 | $34.99 | 44% |
| starcitygames | 9ED #231 | Nonfoil | $15.00 | — | — |
| CoolStuffInc | ONS #247 | Nonfoil | $15.00 | — | — |
| Card Kingdom | 9ED #231 | Nonfoil | $15.00 | $29.99 | 50% |
| CoolStuffInc | 9ED #231 | Nonfoil | $10.00 | — | — |
Biorhythm Rules Text & Legality
Each player's life total becomes the number of creatures they control.
Biorhythm is legal in Modern, Legacy and Commander, and not legal in Standard, Pioneer and Pauper.
Biorhythm Rulings
- Oct 4, 2004 If a player controls no creatures when this resolves, their life total will become zero and they will lose the game.
- Oct 4, 2004 This spell causes the player to lose or gain enough life to change to the new life total.
Reprints & Reprint Risk
Biorhythm has been reprinted 4 times.
| Set | Date | Rarity | Treatment |
|---|---|---|---|
| 9ED #231 | 2005-07-29 | Rare | Standard |
| 9ED #231★ | 2005-07-29 | Rare | Standard |
| ONS #247 | 2002-10-07 | Rare | Standard |
| ONS #247 | 2002-10-07 | Rare | Standard |
9ED #231 
ONS #247 Biorhythm in Commander
Biorhythm is the #10,406 most-played card on EDHREC, up 572 places over the last 30 days.
Biorhythm FAQ
How much is Biorhythm worth?
Biorhythm is worth about $37.34 for its cheapest playable printing as of Aug 7, 2026. Prices range from $33.68 to $172.91 across 3 tracked printings.
Is Biorhythm legal in Commander?
Yes — Biorhythm is legal in Commander. It is also legal in Modern and Legacy.
Has Biorhythm been reprinted?
Yes — Biorhythm has been reprinted 4 times, with 3 printings tracked on The Index.
Why is Biorhythm expensive?
Biorhythm trades at $37.34 on printing supply and steady demand.