I think for your mana average cost dark confidant is a danger, and for me you need more lands too.

The average CMC is something i thought about a lot when I was bringing in Vampire Nocturnus. I decided it was little high but I was going to test it since I have lifelink as a factor too. It has worked out well a lot of the times I'll take damage from Bob trigger and then lifelink it right back making Bob a free extra draw. In play everything in the deck works out fine for me including the lands. In fact 21 lands have been about the perfect amount for me.

How about Chandra's ignition for the field wipe? Use on nighthawk and gifted aetherborn and you can pretty much blow up everything and gain a ton of health back in the process.

Unless you were shooting to make sure vampire nocturnis' ability 100% active

soullessninja7 what's you're opinion on stromkirk noble, blood seeker and indulgent aristocrat?

I used to play both stromkirk noble and indulgent aristocrat in earlier versions of the deck actually. Both are decent one drops and I think could be could if you are going for a more aggressive build. Especially indulgent with being able to give +1/+1 counters to all vampires, which makes him kinda like a lord. Blood seeker belongs in a different style deck in my opinion, a life drain or combo deck mostly.