You isolate your life force in one single part of the body, typically the little fingeron the left hand. You can then remove this part and store it in some safe place. Once the spell takes effect, you can no longer be killed by ordinary means: If damage or a spell effect would normally render you disabled, dying, or dead, you ignore the usual effects. Instead, you are staggered for that round (only able to take partial actions).
While this spell is in effect, if you would otherwise be disabled or dying, you do not lose hit point total. Each time you take a blow to place you at -10 hit points or below you are instead staggered for that round and go back to 1 hit point.
If the hidden body part is ever destroyed, the spell is broken and your life force return to the body, if one exists. If not the caster dies.
Only the sheer destruction of the body by dismemberment would destroy it. Once the time expires the soul returns to the body and the member withers and dies.
Material Component: A small sickle made of the purest silver, which you use to detach the body part to be stored.
XP Cost: 5,000 XP.