I think entomb is unnecessary if you're running buried alive, some other cards... you should focus on creatures that work better with your deck... check out my reanimation build Grave Betrayal ... i also found a nice alternative to exhume, demonic tutor is only nice if you have the money.... id drop many of your expensive cards for more demonics...

What makes this deck Vintage legal? Only Demonic Tutor? You may want to replace it and go into Legacy, you will find easier decks for just one card.

Both Vamp and Demonic tutors make it illegal. I am willing to switch them out, but I would need suggestions.