Blur

When a blur spell is cast, the caster causes the outline of the creature touched to appear blurred, shifting, and wavering. This distortion causes all missile and melee combat attacks to be made at -4 on the first attempt and -2 on all successive attacks. It also grants a +1 on the saving throw die roll against any direct magical attack. A detect invisible spell does not counteract the blur effect, but a true seeing spell does. Opponents that cannot see the subject ignore the spell’s effect (though fighting an unseen opponent carries penalties of its own).