A corrosive bubble appears in your hand that you fling at a target within range.  A creature within range must make a Dexterity saving throw. On a failed save, each creature within 5 feet takes half damage; on a successful save they take none, and the target takes half damage.

This spell’s damage increases by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).