Tenser's Superior Disc

This spell creates a circular, horizontal plane of force, 3 feet in diameter and 1 inch thick, that floats up to 30 feet above the ground in an unoccupied space of your choice that you can see within range. The disk remains for the duration, and can hold up to 500 pounds. If more weight is placed on it, the spell ends, and everything on the disk falls to the ground.

If The mage can see the disc he can move it up to 30ft up or down and horizontally with a bonus action.

The disc persists for the duration even if the mage moves out of line of sight.