Any suggestions are welcome! Let me know what else I can do to improve this deck.

I think you have a lot of big dudes, and not much to do early on which would make it hard to survuve long enough to play them. I like using things like Unburial Rites in a deck like this coupled with things like Entomb or Buried Alive. Then i would cut down a bit in the big atuff and play some things like Vindicate, Path to Exile, Duress, Diabolic Edict, and the like to keep their game plan down while you build up. You could even play thinga like Oblivion Ring, Ghostly Prison, and the The Abyss, Braids, Cabal Minion and other lock tyoe effects one of my favorites is Attrition and something immortal like Reassembling Skeleton. I would also probably not play so many one-of-s which i understand is in the deacription but it still might not be the best thing to do.