Wind Wall

This spell brings forth an invisible vertical curtain of wind 2 feet thick and of considerable strength—a strong breeze sufficient to blow away any bird smaller than an eagle or tear papers and like materials from unsuspecting hands. (If in doubt, a saving throw vs. spell determines whether the subject maintains its grasp.) Normal insects cannot pass such a barrier. Loose materials, even cloth garments, fly upward when caught in a wind wall. Arrows and bolts are deflected upward and miss, while sling stones and other missiles under two pounds in weight receive a -4 penalty to a first shot and -2 penalties thereafter. Gases, most breath weapons, and creatures in gaseous form cannot pass this wall, although it is no barrier to noncorporeal creatures.

The material components are a tiny fan and a feather of exotic origin.