I've seen several people posting Dark Aura builds, but none of them are quite like the one I came up with, so I wanted to post it for you pros to critique. I put Aura of the Lich in mine to reduce the amount of damage and life I have to sacrifice by half and double the effectivness of my life stealing and regen abilities while leaving my damage output level the same. My biggest concern was with energy, so I looked at all the options from all the diffrent classes and channeling looked like it would be the most useful, but I'm open to suggestions.
Blood: 12 (+4)
Death: 11 (+3)
Soul Reaping: 6 (+whatever)
Inspiration: 2
E Aura of the Lich
Dark Pact
Dark Aura
Touch of Agony
Vampiric Gaze
Life Siphon
Putrid Explosion
Channel
I know jacking up my attributes will drasticly lower my health, but with Aura of the Lich on, the difference between 480 and 380 goes from 100 to 50, which isn't that big of a deal. Plus, that's less health I have to sacrifice whilst doing the same amount of damage. Putrid Explosion is just there because I figured if I was jacking up Death Magic so high, then why not? I could easily replace it with something else, though. I chose Vampiric Gaze over Vampiric Touch since they lowered the casting time to 1 and it's range. That'll let me hang back and just nuke with Death Pact and heal with the Gaze if I don't want to run into the crowd or can't for some reason.
M

Once you kill your target (which happens quickly with this build) use Well of Blood for you and your teammates to regen HP, and repeat.