Hi.. i'm a great fan of vampires too, and have a Edgar build too, so i can share some information about how that works from me
1 - Creatures i don't like and why:
Viscera Seer - It's not an Aristocrat and a based-creature aggro does not benefit by losing creatures
Cruel Celebrant - the same, and i think have better drop 2)
Marauding Blight-Priest - i sadly think this creature is very bad, but can works good with
Sanctum SeekerVampire Cutthroat - I tried this card on the deck a long time, but it does the same as any chip 1/1 vampire token :/
Vona, Butcher of Magan - 7 life is very high, usually I don't have to worry about destroying things, the game is over before that. i really preffer
Licia, Sanguine Tribune, but i don't use it in my build too.
Malakir Cullblade - weak... I'll explain what to replace.
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2 - Replacements
Rakish Heir in place of
Malakir Cullblade: Rakish is better and too fast than Cullblade, in early game if you worry about removing creatures, you will not play creatures and your game will be slow. Rakish improve your vamps at combat damage...
I usually play 1 vamp in turn 1 and make 1 token
in turn 2 I play another vamp and put another token > in turn 3 with him on the field the chance of the 4 vampires gain his marker is very high since someone is still going to be ramping.
or you can put
Metallic Mimic (but i don't like)
Knight of the Ebon Legion for me it's the best drop 1 vamp, and
Dusk Legion Zealot is a good replacement for
Cruel Celebrant: draw is ever welcome and is monoB and easier to play.
Mirror Entity: i hate put other types at tribals, even a changeling (even knowing Changeling is a vampire too, so put the eminence token) but this card is broken: changing the base status of all your creatures at instant speed and without even needing to attack or be affected by summoning sickness to activate the ability is insanely strong in the late game.
i preffer
Vanquisher's Banner than
Door of Destinies cause the draw!
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3 - Other good Synergies
Pillar of Origins - an owesome tribal ramp
Cathars' Crusade +
Cauldron of Souls: Your creatures are immortals and gigantic full of 1/1 counters
Blood Tribute + tapping
Vito, Thorn of the Dusk Rose to pay the kicker cost = insta kill
Forerunner of the Legion, a 3x1 card creature > token > tutor
that's all i can feedback... sorry for the big text, i hope it help your gameplay!
As i said, i play Edgar too, so if you want, give a look at my deck and feedback me too!!!
https://deckstats.net/decks/5754/1887715-camarilla-edgar-flamenguista-