Unearth gives you recursion, which will net you all but nocturnus (or if you choose to run it, Twlight Prophet). This is especially good for bringing your lords up to buff your other vampires.
Swords has two issues in this deck: it is monowhite so it nonbos with Nocturnus and it has your opponent possibly gaining a bunch of life.
Unmake maybe two more cmc, but it has no drawback and doesn’t care what lands you have untapped.
Tithe drinker can help you gain the life you want with extort and yet again is Nocturnus compliant. Mavren is not, costs more, and as a legendary creature only one Mavren can be on your battlefield at a time. One or two Tithe Drinkers, not anymore.
Twilight Prophet would be a great card if you have the budget for it. It is very easy to get city’s blessing and thus get card and life advantage. Once again I recommend taking out a Mavren for it.
Are you playing it standard only, or is this this an "anything" goes build? Makes all the difference in the world. Plus I assume it's duels only and not multiplayer
your updated list looks great!
If you want to try more unearths, i’d Swap out Legion’s Landings. No more than three unearths, but you might want to keep a Legion’s landing or two for token generation.
I'd move from Vampire Nocturnus to Captivating Vampire. Nocturnus is inconsistent even in mono-black decks with lands messing it up. Adding an additional color on a card that is 1BBB and requires a black card on top of your library seems bad. Captivating works well with token generation and is easier to cast.
Also, Sorin, Lord of Innistrad might be a decent upgrade for the planeswalker slot, especially with captivating.
You may want consider red as a splash if your running the deathtouch vampires stromkirk captain gives them first strike wich makes your vampires near unbeatable in creature combat. stensia masquerade gives first strike as well but only when attacking. In white. archetype of courage does this while denying first strike but isn’t a vampire or vampire themed.
If your ever planning on playing multiplayer with it this is extra helpful for not dying. You could even build a pillow fort deck now that we have a one drop nighthawk. Using things like blade of the blood chief to make them big. Captains and vampiric furyfor first strike.
https://deckstats.net/deck-19859333-6db6e31bc4386ad2c149ccd747b0cd2c.html
Possible updated deck:
https://deckstats.net/deck-19859574-9ef130b83b524707f85c91d25f3b6488.html
Unearth gives you recursion, which will net you all but nocturnus (or if you choose to run it, Twlight Prophet). This is especially good for bringing your lords up to buff your other vampires.
Swords has two issues in this deck: it is monowhite so it nonbos with Nocturnus and it has your opponent possibly gaining a bunch of life.
Unmake maybe two more cmc, but it has no drawback and doesn’t care what lands you have untapped.
Tithe drinker can help you gain the life you want with extort and yet again is Nocturnus compliant. Mavren is not, costs more, and as a legendary creature only one Mavren can be on your battlefield at a time. One or two Tithe Drinkers, not anymore.
Twilight Prophet would be a great card if you have the budget for it. It is very easy to get city’s blessing and thus get card and life advantage. Once again I recommend taking out a Mavren for it.
If you want to try more unearths, i’d Swap out Legion’s Landings. No more than three unearths, but you might want to keep a Legion’s landing or two for token generation.
Also, Sorin, Lord of Innistrad might be a decent upgrade for the planeswalker slot, especially with captivating.
If your ever planning on playing multiplayer with it this is extra helpful for not dying. You could even build a pillow fort deck now that we have a one drop nighthawk. Using things like blade of the blood chief to make them big. Captains and vampiric furyfor first strike.
Also if you want to run Nocturnus you should consider cutting some white cards for some more orzhov and black vampires. Some of my favorites are gatekeeper of Malakir, tithe drinker, dusk legion zealot, and indulgent aristocrat. Also bloodline keeper and captivating vampire are fun to use though are prycieir.
If your using white I’d consider adanto vanguard. I find it’s indestructible ability can come in handy and 3 power for 2 mana is quite aggressive.