Barrier of Thoth
(Conjuration/Summoning)

Range:  100 yards
Components:  V, S, M
Duration:  1 hour per level
Casting Time:  1 round
Area of Effect:  3 feet per level diameter sphere
Saving Throw:  None

This spell creates a higher-level wall of force (q.v.) that is in the shape of a sphere. It is mobile if centred on the caster and immobile if centred on a location.
The sphere is totally impervious to all physical blows, and spells of ninth level and below. It prevents any passage into it by physical, ethereal, or spell means. However, it has no influence toward any force leaving the sphere. Therefore, a fireball spell, for example, thrown against the barrier will glance off harmlessly, but a fireball my be thrown out of the sphere with normal effect. Creatures with magic resistance are always affected by the barrier.
If the barrier is mobile, and the caster moves, any and all objects that hit the wall are casually pushed aside, regardless of the relative strength of the wizard. Therefore, a wizard armed with this spell, while also under the influence of a fly spell, could be a great wrecking ball. It is important to note, however, that if the caster walks along the ground, the barrier will push aside the earth that rests in its path, thus causing the wizard to walk in a trench of ever increasing depth.
The material components are an uncharged cube of force, a 3-inch hollow sphere of mithril, and a sanctified silver holy symbol of the primary god of protection.

