You can bite a creature, dealing piercing damage. In addition you can gain hit points equal to the damage dealt

You have dark vision to a range of 60ft

You live anywhere from 80 to 200

When you take damage you must succeed on a wis save= 10 or half the damage taken (whichever is higher) or you enter a blood frenzy. When in a frenzy you attack the creature that attacked you with your bite until it dies or the frenzy ends. You must repeat the save at the end of each of your turns.

Increase 2 abilities by 2