Ideas. Life steal melee. Blood flow. Bite your own hand turning you invisible and granting Diamond skin for a time. Or Bite your hand infusing your weapons with volatile bullets that grant portions of over shield on kills. New class ability ideas. Summon a shroud of darkness disorienting enemies. Activate Diamond skin to take reduced damage and nullify flinch for a time. Activate Primal sense to break the laws of physics and run and shoot on walls.