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Each player's life total becomes the number of creatures they control.
Abilities, attacks, weakness & resistance
Other cards from Onslaught
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Biorhythm (ONS 247) is a green sorcery from Onslaught that sets each player's life total equal to the number of creatures they control. When it resolves, players gain or lose life as needed, and a player with zero creatures will have their life set to zero and lose the game. This card can act as a sudden win condition in creature-heavy boards or a massive life swing in multiplayer games.
Catalog pricing data as of 20 Apr 2026, 10:53
