You send out a burst of 4 thunder cracks in a zig zag formation. Each crack has a 10ft sphere radius. Any creature inside one of the sphere must make a constitution saving throw. On a failed save the creature takes 4d8 thunder damage plus 2d6 lighting damage and is deafened for 1 round, on a successful save the creature takes half as much damage and is not deafened.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.