Thorn's Spherical Swarm

You conjure a dense sphere of spectral insects—buzzing flies, biting beetles, and stinging wasps—that occupies a 5-foot-diameter space of your choice within range. It lasts for the duration. Any creature that enters the swarm or ends its turn there takes 2d8 piercing damage as the insects bite and sting relentlessly. (No saving throw.)  

Additionally, any creature that starts its turn within 10 feet of the swarm must succeed on a Constitution saving throw or become deafened and suffer disadvantage on attack rolls until the start of its next turn, overwhelmed by the oppressive droning and crawling swarm.

As a Bonus Action, you can move the swarm up to 30 feet in any direction. If you move the swarm into a creature’s space, that creature takes damage and the swarm stops moving.

Using a Higher-Level Spell Slot. The damage increases by 1d8 for each spell slot level above 2.