Corrosive Ray

A corrosive beam of pale green light streaks toward a creature within range. Make a ranged spell attack against the target. On a hit, it takes 1d6 acid damage and an additional 1d4 acid damage at the start of its next turn.

The spell's damages both increase by 1d6 and 1d4 respectively when you reach 5th level (2d6/2d4), 11th level (3d6/3d4), and 17th level (4d6/4d4).