The beast within

When somebody within 5 feet becomes bloodied (half Hitpoint) make a wisdom save (DC10). When you fail this roll you enter a frenzied state where you try to bite someone who is within 5 feet of you. This bite works the same as your bite feature without the beneficial effects. If this bite does not succeed the frenzy continues until you succeed on a bite attack or if someone feeds you blood. On a success, you gain no effects.