Creatures within a 20-foot sphere centered on a point of your choosing feel a sudden, explosive pressure within their skulls. They must make a Constition saving throw and take 8d6 psychic damage, or half on a successful save.

This spell ignores walls and terrain features, unless magically warded.

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.