T Dust

You imbue yourself with thunder energy and make a ranged weapon attack knocking the target back 10ft on a hit (Extra Attack Applies Only Once per Turn). The attack/attack's gain (+2) to hit and does (2d8) additional thunder damage deafening all creatures within 300ft as an audible boom rings out.

At Higher Levels. This spell’s damage increases when you reach certain levels. At 5th (3d8) At 9th (4d8) At 13th (5d8) At 17th (6d8).