Eldritch burst

You launch an invisible blast towards a target. Target a creature within range, on a hit, they take 1d6 force damage. If you dealt more than 3 damage with this attack, every creature within 5 feet of the target (not including the target) must make a Dexterity saving throw or take 1d4 force damage.

This spell's initial damage increases by 1d6 and bonus damage increases by 1d4 when you reach 5th level (2d6 and 2d4), 11th level (3d6 and 3d4), and 17th level (4d6 and 4d4).