Soul Shift - Old Empire

This extremely powerful spell will transfer the lifeforce of the wizard from his own body into a previously prepared corpse. This corpse must be within the area of effect of the spell and be unmarred by disease, wounds, or injury. At any time during this spell's duration, the wizard can choose to abandon his body and travel into the corpse. The wizard's true body remains alive, but in a zombielike state.

When the wizard's lifeforce reaches its new home, the wizard must immediately roll for resurrection survival: failure means death. If successful, the new body is restored as it was before death, except for the loss of 1 point of Constitution. The wizard retains the knowledge of all of the spells he knew before to the transfer. This transfer is one-way; the wizard cannot return to his old body.

The material component for this spell is a crushed ruby of at least 1,000 gp value.