The warded creature or object becomes difficult to detect by
divination spells such as
clairaudience/clairvoyance, locate object, and
detect spells.
Nondetection also prevents location by such magic items as
crystal balls. If a
divination is attempted against the warded creature or item, the caster of the
divination must succeed on a
caster level check (1d20 +
caster level) against a DC of 11 + the
caster level of the spellcaster who cast
nondetection. If you cast
nondetection on yourself or on an item currently in your possession, the DC is 15 + your
caster level.