Figment

Illusion (Figment)
Tier: 2
Components: Verbal, Somatic
Casting Time: 1 major action
Range: 40 ft
Target: One creature
Duration: 10 minutes/level
Saving Throw: Charm negates or disbelief, see text
As the guard chases down the “thief” you smile to yourself and slip through the door

You insert a hallucination into the target’s psyche, which takes the form of a number of objects, creatures or other phenomena. Because this spell is powered by the target’s own subconscious, it can fool all of the target’s senses. You specify what the figment is, and what it is doing (behavior must be fairly simple, but can be reactive). Unlike an image, you do not control the details of the figment’s appearance and behavior; these are supplied by the subconscious of the target. You can create a number of things equivalent to one large object. At the GM’s discretion, far off objects should count as much smaller objects. For the purposes of this spell, the following are equivalent:

¼ colossal = ⅓ gargantuan = ½ huge = 1 large = 2 medium = 3 small = 4 tiny

When you cast the spell on the target, it is entitled to a save to negate the effect. The target receives an additional save each time its belief is stretched by some impossible happening (such as: the creature not being hit by an attack which should have landed, others failing to see the figment, the figment failing to respond believably to its environment); if it fails, the target has somehow rationalized or imagined away the inconsistency. If the target succeeds on their save, the spell ends instantly and the figment vanishes.

Augmentation:
For each extra spell point you invest, you can create another large object (up to a maximum total of [caster level] - 2 objects)

If you cast this as a tier 4 spell, it can affect a number of creatures up to your caster level, who all see slight variations on the same figment.