Once this spell is cast, you surround yourself with a pillar of 150+ mph winds that can divert just about any attack. All creatures that try to enter the area (or are within the area when the spell is cast) get picked up by the winds, regardless of size. If they fail a Reflex save, they are carried violently by the winds for the round and take 3d4 damage; if they make the Reflex save, they are hurled out of the spell's area, landing 1d6x5 feet away and taking 2d4 points of nonlethal damage. A creature being carried by a wind shield is unable to move unless it is capable of flying or otherwise altering its midair motion, in which case it may attempt to make a new Reflex save every round. A creature being carried by a wind shield may cast spells, but it must succeed on a Concentration check