Arunsun's Punches of Insanity

You begin punching and kicking the air like a screaming madman. Choose one or two creatures you can see within range. If you choose two, they must be within 5 feet of each other. A target must succeed on a Dexterity saving throw or take 1d6 force damage. Small targets have advantage on this saving throw. 

Anyone who fails the saving throw by 5 or more takes an additional 1d6 damage.

The verbal component of this spell is loud screaming. 

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