Umbral Fury

You can increase your Strength, Dexterity, or Constitution by 1.
Your claws and Teeth are extraordinarily powerful and gain the following benefits.
● The damage die for them increase by one to 2d6(Teeth) and 2d4(claws).
● When you attack a creature that is missing hit points, with your teeth or claws, you deal additional damage equal to your proficiency bonus.