Drakelton's Floating Disk

This spell creates a circular, horizontal plane of force, 3 feet in diameter and 1 inch thick, that floats 3 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.

The way this spell differs from Tenser's disk is it can change elevation past 10 feet. The disk will follow it's caster up to 100 feet in the air, the disk can go higher, but holds less weight. At 150 feet it can hold 350 pounds. At 200 feet it can hold 200 pounds. The disk can not go past 200 feet in elevation. 

If you move more than 100 feet from the disk (typically because it can't move around an obstacle to follow you), the spell ends.