Simple question, can you move a Wind Wall once it's been created?
Casting Time 1 standard action
Components V, S, M/DF (a tiny fan and an exotic feather)
Range medium (100 ft. + 10 ft./level)
Effect wall up to 10 ft./level long and 5 ft./level high (S)
Duration 1 round/level
Saving Throw none; see text; Spell Resistance yes
An invisible vertical curtain of wind appears. It is 2 feet thick and of considerable strength. It is a roaring blast sufficient to blow away any bird smaller than an eagle, or tear papers and similar materials from unsuspecting hands. (A Reflex save allows a creature to maintain its grasp on an object.) Tiny and Small flying creatures cannot pass through the barrier. Loose materials and cloth garments fly upward when caught in a wind wall. Arrows and bolts are deflected upward and miss, while any other normal ranged weapon passing through the wall has a 30% miss chance. (A giant-thrown boulder, a siege engine projectile, and other massive ranged weapons are not affected.) Gases, most gaseous breath weapons, and creatures in gaseous form cannot pass through the wall (although it is no barrier to incorporeal creatures).
While the wall must be vertical, you can shape it in any continuous path along the ground that you like. It is possible to create cylindrical or square wind walls to enclose specific points.
Every other wall spell says they are anchored in one way or another but Wind Wall does not. It kind of makes sense that it would be moveable... It's a pretty good spell if it's immobile, I'm not sure if making it mobile is a bit Over the top... What do you think?
Also, if it's mobile what kind of action is it to shape it?
A wind wall isn't anchored because. . . it doesn't actually touch anything? (:
I'm pretty sure it isn't mobile. Compare the fairly lengthy text in rainbow pattern describing how to move the effect. Wind wall would have to have similar text (spend an action to move it) to make it mobile.
I was going to suggest making a metamagic feat to make area spells mobile, but that might completely imbalance a lot of spells. I guess caster-directed mobility is something you have to think about carefully when designing spells.
I more or less figured a spells effect would be immobile unless stated otherwise but then why do certain effects (wall of fire, wall of force) specifically state they are immobile?