By casting this spell, the wizard makes the creature or object touched undetectable by divination spells such as clairaudience, clairvoyance, locate object, ESP, and detect spells. It also prevents location by such magical items as crystal balls and ESP medallions.
It does not affect the know alignment spell or the ability of intelligent or high-level beings to detect invisible creatures.
If a divination is attempted, the non-detection caster must roll a saving throw vs. spell. If this is successful, the divination fails.
The material component of the spell is a pinch of diamond dust worth 300 gp.