Love vampires!

Here's my suggestions:

-2 Necropolis Regent

-3 Sanguine Bond

-2 Sangromancer

-1 Anowon, the Ruin Sage

-4 Dark Ritual

-3 Blood Tribute

+3 Blood Artist

+4 Blade of the Bloodchief

+3 Swamp

+1 Vampire Nocturnus

+4 Bloodchief Ascension

I think by doing something like this, you'll be less reliant on your dark rituals, have a bit better curve, put major pressure on your opponent by forcing them into thinking they can't attack profitably because of all your death triggers (Blood Artist, Blade of the bloodchief, Bloodchief Ascension, Kalastria Highborn, etc), while still allowing you to attack in and activate Bloodchief Ascension. Bloodchief Ascension is absolutely bonkers. Remember, it triggers on _each_ end step, not only yours. Once it's primed, it may as well read, "whenever an opponent casts a spell, discards a card, or a creature they control dies, they lose 2, you gain 2." I purposefully left in 1 Anowon, the Ruin Sage as a late game win-con if things get into a stalemate.

I like this but the mana curve is a bit rocky. Was tough to get a good opening hand with a mix of swamps and lower cmc creatures. Seem to start really slow then ramp up by turn 3/4 but ONLY if i was able to put a land out each turn and was sitting on a dark ritual. W/o a dr and you needed 4/5 turns to get going cause your cheap creatures dont do much really when relying on these big ability high cmc dudes. Just my 2c from playing this. Bloodghasy was able to come back a few times but it cant block and was, sadly, the most seen ansost played creature when play testing.

Vrry close to my vamp deck except my mana curve is opposite and every causes opponent life loss and counter production.

With 6 cards in the deck are of the same legenadry creatures, do you have any issues with having multiples of the same.legenadry in your hand thats already in play when playbtesting this?