As with the Life 2 Organic Resilience spell, p. 183, but the mage can now cast this magic upon others.
Free Council Rote: Muscular Tension
By performing subtle modifications to body chemistry and physiology, a Council willworker can fortify the body of a treasured companion, an ally of convenience, or even an innocent bystander.
Silver Ladder mages are known to use similar magic (Presence + Medicine Skill + Life) to fortify their champions in dangerous times.