Dire Stirge's Bite
You've learned well from the insects.
Requirements: Bite natural attack, Improved Natural Attack, Improved Grapple.
Benefit:When you constrict or bite a foe you're grappling, you may have the target make a fortitude save. If they fail, you may deal 2 points of constition damage. If you deal constitution damage this way, you heal HP equal to the target's Hit Dice. The save is strength based (10 + 1/2 HD +Strength modifier).
And are you trying to tell me that you're interested in my opportunity, Red Fel?