Biorhythm

Standard	Rotated out on July 20, 2007
Pioneer	Not Legal
Modern	Never Banned
Legacy	Never Banned
Vintage	Never Banned
Commander	Game Changers since February 9, 2026
Pauper	Never Banned
Oathbreaker	Banned since June 19, 2018
Extended	Rotated out on July 1, 2010

View on Scryfall

Timeline

• October 7, 2002 - Released
• April 22, 2005 - Status changed to Banned in Commander
• June 19, 2018 - Status changed to Banned in Oathbreaker
• February 9, 2026 - Status changed to Game Changers in Commander

Rationale

Biorhythm was previously restricted due to its significant power level and the disproportionate impact it could have on opponents. Following the successful unbanning of other spells that radically warp or end the game, including Sway of the Stars and Coalition Victory, the Commander Format Panel reassessed the card. Although the potential for ending the game and leaving specific opponents in a disadvantaged state was noted, the panel determined that the card requires substantial setup and counterplay, mitigating its immediate risk. Because it provides a highly memorable, game-changing experience, Biorhythm was unbanned and placed on the Game Changers list for the Commander format.

This summary was generated by gemma4 on September 14, 2026. It has not yet been reviewed by a human editor and may contain some inaccuracies. Learn more.

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