Stone Protection
(Abjuration)

Range:  10 yards per level
Components:  V, S, M
Duration:  1 hour per level
Casting Time:  1 turn
Area of Effect:  30 cubic yards per level
Saving Throw:  None

This spell will protect any magical or non-magical stone in the area of effect from the following spells: transmute rock to mud, passwall, phase door, disintegrate, stone to flesh, animate object, earthquake, polymorph any object, stone shape, distance distortion, and animate rock. It further gives the stone affected a +3 on saving throws against other attack forms (fireball, lightning bolt, cold, acid, blows, etc.).
An earth elemental can neither be conjured in the area nor enter it. This spell will have no effect on stone golems or clay golems, but it will prevent xorn, umber hulks, purple worms and similar creatures from burrowing in the affected area. At the DM's option, non-standard spells, spell-like effects (a horn of blasting, for example), and psionic abilities which affect stone may be prevented from operating. This spell can be made permanent by permanency with the loss of one point of Constitution from the caster due to the use of the permanency. The material component of this spell is a boulder of at least 400 gp weight.
This spell was researched by Whitewolf. Like freeze [2] (q.v.), this is a pretty silly spell just for castle defense.

