The character can form an existing piece of stone into any shape that suits the character's purpose. For example, the character can make a stone weapon, a special trapdoor, or a crude idol. Stone shape also permits the character to reshape a stone door to make an exit where one didn’t exist or to seal a door shut. While it’s possible to make crude coffers, doors, and so forth with stone shape, fine detail isn’t possible. There is a 30% chance that any shape including moving parts simply doesn’t work.