Phantom Wind

When this spell is employed, the illusionist creates a wind which cannot be seen or felt. 

This movement of air does, however, serve to blow light objects before it, flutter curtains or drapes, flap loose clothing (such as capes, cloaks, and mantles), fan fires, and move clouds of gaseous materials (such as a wall of fog, a fog cloud, a cloudkill cloud, etc.). 

The wind created moves in the direction in which the illusionist points, its effects being felt in a progressively longer path as the spell continues, at a movement rate of 1" per round, with the effects lasting the entire course of the path. 

Thus, the spell could, for example, be employed to move several sailed vessels, but the first affected by the wind would also be the one to move the farthest.