Shroud the Weak Mind

Abjuration
Level: Ranger 1, Trickery 1
Components: S
Casting Time: 1 standard action
Range: Touch
Targets: One creature touched/level
Duration: 10 min./level (D)
Saving Throw: Will negates (harmless)
Spell Resistance: Yes
Spell Points: 1

Mindless creatures and creatures with an intelligence score of 2 or less cannot see, hear, or smell the warded creatures. Even extraordinary or supernatural sensory capabilities, such as blindsense, blindsight, scent, and tremorsense, cannot detect or locate warded creatures. Such creatures simply act as though the warded creatures are not there. If a warded character touches a creature being duped by this spell or attacks any creature, even with a spell, the spell ends for all recipients.

Augment: For every 3 additional spell points you spend, creatures with an intelligence score 2 points higher cannot perceive the warded creatures. For example, a Shroud the Weak Mind spell augmented to cost 7 spell points would fool all creatures with an intelligence score of 6 or less.