Blur

Blur was a Illusion spell that made the contours of a caster "blurry".

Effects
When under this spell the caster would become harder to hit as its not seen as a solid form any more. Attacks made against a blurred caster by some one whom didn't see it of course ignored this spell as they don't see the effect.

Components
The older versions of the spell need verbal and somatic components but the later only needed verbal.