Hidden Life

HIDDEN LIFE
Type: P Action: Complex
Range: Touch Duration: Permanent
Only for Free Spirits, Greater Power

The spirit uses this power to permanently place its life force in a creature, place, or object. As long as the hiding place remains safe, the spirit cannot be permanently banished or destroyed by any means. The spirit is able to return after a year and a day if banished with its spirit formula, but a character holding the spirit formula may call the spirit sooner.
The hiding place gains Immunity to Normal Weapons with a Magic equal to the spirit’s and Immunity to Age (p. 397, CRB). If the hidden life holder is destroyed, the life force returns to the spirit, and the spirit is treated normally.

(p205 SG)