Animating Bowl

A medium sized wooden bowl. When any loose dry material (such as sand, grain, flour, dust, etc) is placed within the bowl, any user within 5 ft can then focus on the bowl and animate the material inside to move and take on whatever shape they imagine. Any material that leaves the circumference of the bowl, or disconnects from the rest of the material, becomes inanimate. If more than one creature tries to control the contents, they must take contested Wisdom checks to see who commands the bowl.