Quote Originally Posted by The Giant View Post
Draining levels with a slam attack doesn't give a vampire sustenance; grappling and drinking blood does. You can level-drain a person all the way down to dead and you'll still be hungry. So this wasn't a crazy-paranoid defensive technique, it's a hunting aid. If it also had utility in combat, well, bonus.
Really? Because both the blood drain and negative levels give the vampire temporary hit points. I thought that represented the vampire gaining sustenance.