Vicious linguist

Your expertise in insulting your opponent has led you to realize that you need not limit your insults to vicious mockery.

Taking this feat allows you to add your vicious mockery dice to the damage roll of any damaging spell, provided you topically insult them using some part of your spell as the base of your insult.

you can use this feat a number of times each short rest equal to your charisma modifier +2

You must know vicious mockery in order to use this feat