Defenestrating Sphere

 A 5-foot-diameter cloudy gray sphere of whirling air and howling wind flies to attack your enemies and hurl them to the sky. Any creature or object struck by the sphere takes 3d6 points of damage from the force of its winds. In addition, Medium or smaller creatures must succeed on a Constitution save or be knocked prone. Creatures that fall prone must then succeed on a second Constitution save or be swept up by the sphere and driven 1d8×10 feet into the air, landing 15 feet from their original position in a random direction and taking falling damage as normal.

If some obstacle prevents the target creature from reaching its expelled height, it takes 1d6 points of damage for every 10 feet of movement it was unable to complete, so that a creature hurled 50 feet up in a room with a 20-foot ceiling would take 3d6 points of damage from the impact, then take 2d6 points of damage when it falls back to the ground.

As a bonus action, you can move the sphere up to 30 feet. If you move the sphere, you can direct it over barriers up to 5 feet tall and jump it across pits up to 10 feet wide. When you ram the sphere into an object or creature the sphere stops moving this turn. 

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the initial damage increases by 1d6 for each slot level above 4th.