Biorhythm

Biorhythm was originally printed as a rare card in the 2002 Scourge set before being reprinted in Ninth Edition, which was released in 2005. As a core set, Ninth Edition served as a bridge for players, featuring a curated selection of cards from the game's history with updated frame designs to reflect the shift to the modern card face. The card's effect, which sets each player's life total to the number of creatures they control, represents a high-impact board state manipulation typical of green magic's focus on creature density.

The card was illustrated by Ron Spears, a prolific artist who contributed a vast body of work to the game during the early 2000s. Spears was known for his ability to convey chaotic energy and natural forces through his art. His depiction of Biorhythm captures the cyclical, elemental theme inherent in the card's mechanics, utilizing a vibrant color palette that aligns with the aesthetic standards established for the Ninth Edition release. The card remains notable within the community for its polarizing design, which frequently leads to sudden, dramatic shifts in gameplay.