User is made up of or can transform their body completely into stone. Users' transformed form is either anatomically identical to their normal form, aside of being made of stone, in which case it contains all to organs and is somewhat vulnerable to attacks. Alternately, the user can transform into homogenous matter, without any part of their form being more important than the other. There are several kinds of stone, of varying hardness and durability. The user may be able to tap the varying abilities of them, for example the sharpness of obsidian.