E Dust

You imbue yourself with fire energy and make a ranged weapon attack (Extra Attack Applies Only Once per Turn). The attack/attack's gain (+2) to hit and does (2d8) additional fire damage as you're attacks explode damaging all creatures within 20ft on hit.

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).