Vitari's Tumultuous Applause

You clap your hands together at a creature you can see. The creature must make a Charisma saving throw against your spell save DC.

On a failed save the target hears a tumultuous applause inside their head and takes 8d8 psychic damage, they are also deafened until the start of their next turn. While deafened in this way the target is is unable to counterspell spells that have a verbal component. 

On a successful save the target takes 4d8 psychic damage and is not deafened.

When casting this spells slot at higher levels the damage increases by 1d8 per level above 4th.