Death Roll

Swift Predator. Any bite attack is now done with dexterity instead of strength, and Hungry jaws gives temp HP equal to the damage you deal with your bite attack.

Gripping Teeth. Whenever you use hungry jaws or the bite unarmed strike, you can attempt to grapple the target using your dex modifier for the DC. (8 + proficiency + dex mod). This form of grapple is only possible if the target is no more than one size class larger than yourself. This grapple acts as 1 extra hand when determining how many creatures you can grapple at once. When grappling a creature with your teeth, the grappled creature has advantage on attack rolls against you.

Death Roll. If you have a creature grappled through the Gripping teeth feature, you may use a bonus action to perform a death roll on the target. When you attempt this, make a DC 24 Acrobatics check. Failure: You can choose to make the creature prone or deal 2d6 slashing damage to the grappled creature. Success: the creature takes 4 X your level Slashing damage, one of its limbs is removed forcibly, and the grapple is ended. The removed limb can be consumed (Unless the limb is from a construct, or undead) over the span of 10 minutes, within a day to restore health equal to 1/4 (round down) of the creature's hit dice. A creature "Disarmed" by this attack cannot be effected again. This ability can only "Disarm" a creature proficiency bonus number of times a day before a long rest.