Stone Form

By means of this spell, the recipient is transformed into living stone, not unlike a stone golem or stone guardian. This spell has no effect if cast upon an unwilling creature. As a creature of magical stone, the subject has an effective Armor Class of 5, or a +1 bonus to current Armor Class, whichever is better, and immunity to nonmagical attacks (such as acid, normal fire, normal weapons, and so on). However, a being in stone form is affected by all spells that affect stone, including stone shape, transmute rock to mud, etc. Any spell effect or physical blow that transforms or shatters the stone form in any way immediately ends the spell effect and inflicts 4d6 points of damage to the subject.

The material components are the priest's holy symbol and a shard of rock from a once-animate stone (perhaps part of a destroyed stone golem or a rock previously subjected to an animate rock spell).