Possession, Greater

Necromancy
Level: Sorcerer */Wizard * 8, Warlock * 8
Components: V, S
Casting Time: 1 Standard Action
Range: medium (100 ft. + 10 ft./level)
Target: one creature
Duration: 1 hour/level (D)
Saving Throw: Will negates
Spell Resistance: yes
  This spell functions as possession, but when you possess a host, you enter the host's body and your physical body vanishes. You are ejected to the closest empty square upon expiration of the spell or upon the host's death.