Blinding Burst

You aim a burst of magical energy into the ground, creating a sudden flash of light and sound in a 5 foot radius surrounding you. Creatures in this radius must make a constitution saving throw equal to your spell save dc. On a failed save, creatures take 1d4 thunder damage and have disadvantage on attack rolls made against you until the start of your next turn. The damage caused by this spell increases to 2d4 at 5th level, 3d4 at 11th level, and 4d4 at 17th level