Disguise Undead

(Ghostwalk)

Illusion (Glamer)
Level: Sorcerer 2, Wizard 2,
Components: V, S, AF,
Casting Time: 1 action
Range: Touch
Target: One corporeal undead
Duration: 10 minutes/level
Saving Throw: None (harmless)

Also appears in

Magic of Faerun
Tome and Blood: A Guidebook to Wizards and Sorcerers
Spell Compendium