Blur

Illusion
Level: Mage 2; Components: V; Casting Time: Attack action; Range: Touch; Target: Creature touched; Duration: 1 minute/level (D); Saving Throw: Will negates (harmless); Spell Resistance: Yes (harmless)
The subject's outline appears blurred, shifting and wavering. This distortion grants the subject one-half concealment (20% miss chance).
A see invisibility spell does not counteract the blur effect, but a true seeing spell does. Opponents who cannot see the subject ignore the spell's effect.