Acorn of Exsiccation

This mundane looking acorn, brown and dried, is unmistakable form any other seed of an oak tree found littering the forest floor. The difference can only be found using detect magic. This item emanates a strong transmutation aura.

This acorn is a single use item. When thrown at a creature within 30 ft., who is not behind total cover, it automatically hits. A creature struck by this acorn suffers the effects of a Flesh to Stone spell (DC 19). Once it's magic has been spent, it becomes nothing more than a typical acorn.

Notes: transmutation