Pugilist

Unarmed Strike Damage: Your mastery in the art of unarmed combat allows your strikes to carry devastating force. Your unarmed strikes now deal 1d6 damage. This damage increases to 1d8 at 10th level and to 1d10 at 16th level.

Crushing Grip: Your hold on opponents becomes a weapon in itself. When you successfully grapple a creature, you automatically deal damage equal to your unarmed strike to the grappled creature at the start of each of your turns as long as the grapple is maintained. This damage represents your ability to apply constricting pressure or to land punishing blows even as you hold your opponent in place.