Rite of the Ancient Dwarf

9th-level Transmutation Casting Time: 1 day Componants: V,S,M (10gp of stone per target) Range: 500 radius Duration: Instantaneous  After completing the ritual, convert as many willing creatures that you can see within a 500 foot radius to living stone. While transformed, they do not need to sleep, eat, breathe, or drink. They are immune to all forms of damage except acid and bludgeoning, and need to be careful about erosion. 
After 24-hours this effect becomes permanent and cannot be undone by anything short of a wish spell.