Clay Coaster

This action creates a circular, horizontal slab of earth, 5 feet in diameter and 1 inch thick, in an unoccupied space of your choice that you can see within range. The coaster remains for the duration, and can hold up to 500 lbs. If more weight is placed on it, your muscles give out and everything on the coaster falls to the ground. 

As a conus action on your turn, you can move the coaster up to 60 feet anywhere within range. You can drop the coaster at any point and form a new one as a bonus action for the duration of the spell.