I don't get how you are planning on winning with this deck, in any meta.
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Isn't Kuldotha Rebirth being used a shitton in standard nowadays? Same idea really.
And as you are fine with using Moxes, why not have Survival of the Fittest and Natural order?
Dragon Arch and Cryptic Gateway could be fit in here, also if you had something along the lines of Polymorph may also work out.
As I see no Bloodghast, would you not want to remove the fetchlands, or are they there to thin out your deck to get you a higher chance of drawing another vampire?
I'd recomment you getting Mul Daya Channelers or Oracle of Mul Daya, they'll allow you to tell whether or not you should use it (Oracle will even allow you to play it if it's a land), also, seems abit expensive, refering to cards like Krosan Cloudscraper here.
It's called B/U.