Cavitation Field

A ribbon of water shoots from the palm of your hand to a point you choose within range.  Hundreds of tendril-like streams of water erupt from the point in erratic patterns, filling the area.  You manipulate the streams, forcefully expanding and then compressing them in an instant.  The water immediately cavitates -- becoming ribbons of cascading implosions with incredible force.  A target in the area takes 8d6 thunder damage on a failed save, or half as much on a successful one.

The water tendrils travel around corners. It soaks objects in the area that aren't being worn or carried, and the implosions make a loud knocking sound that can be heard up to 100 ft away.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.