Shape Stone

Alteration [earth]
Tier: 3
Components: Verbal, Somatic
Casting Time: 1 major action
Range: Touch
Target: Stone or stone object touched, up to 5 cu. ft. + 1 cu. ft./level
Duration: Instantaneous
Saving Throw: No
The throne isn’t comfortable, but it is impressive.

You can form an existing piece of stone into any shape that suits your purpose. While it’s possible to make crude coffers, doors, and so forth, fine detail isn’t possible. There is a 30% chance that any shape including moving parts simply doesn’t work.