Creatures-
2x-Captain of the Watch -
Better as Odric, Master Tactician. You don't run NEARLY enough Soldiers to make her effective, even with Captain's call.
1x-Herald of War -
Looking at it, you don't run NEARLY enough Angels or Humans to make this work.
1x-Warclamp Mastiff -
Terrible card. Don't run it. Play a real card.
1x-Angelic Wall -
Stop it.
1x-Aven Squire -
Play more of these if you want the Exalted trigger.
3x-Blood Artists
2x-Bloodflow Connoisseurs -
Fine as a sacrifice-outlet, but cards that do things would work better. Look into Bone Splinters, Launch Party, and/or Altar's Reap
1x-Nefarox, Overlord of Grixis -
Good as a one-of, but don't rely on it too much.
1x-Xathrid Gorgon -
this is fine secret tech as a 1-of.
2x-Harverster of Souls -
relying on non-token creatures to die seems less good when you only have 18 real creatures in your deck. You should play Desecration Demon instead
1x-Duskmantle Prowler -
as one? Why? Play better Exalted cards instead.
1x-Bloodline Keeper/Lord of Linage -
You don't run enough Vampires. He'll just durdle and get killed.
1x-Mikaeus, the Unhallowed - This is fine. But the triple Black casting cost will be tough to handle.
Sorcery:
1x-Mind Rot -
Fine, I guess. But with Loxodon Smiter in the format this is a risky card.
2x Captain's Call -
Why? A couple of 1/1s doesn't make the same impact.
Instants:
3x-Safe Passage -
Play Faith's Shield instead. You don't want to be on the defensive, and this card is terrible.
1x-Banishing Stroke -
Fine as a 1-of
2x-Murder -
Fine, but the 1BB cost is difficult to cast. Try Utimate Price instead. It hits all monocolored creatures, which are still some of the biggest threats in the format.
Enchantments:
2x-Oblivion Ring -
Good
2x-Angelic Benediction -
meh. You'd rather be playing Sublime Archangel instead.
2x-Pacifism -
Good. Arrest is also an option if the creature has activated abilities.
1x-Exquisite Blood -
Really? I think you'd rather play a better card at 5 cmc.
Planeswalker:
1x-Sorin, Lord of Innistrad -
More of him will help. His Emblem ability (-2) is amazing and really helps with your exalted theme.
1x-Liliana of the Dark Realms -
Works well to keep the Black Mana up.
Artifacts:
1x-Moonsilver Spear -
Terrible. WAY too slow.
Lands
11x-Plains
12x-Swamps
Sideboard:
1x-Barter in Blood
1x-Blood Reckoning
1x-Deathrite Shaman -
DON'T PLAY HIM WITHOUT GREEN! Or you're severely limiting what you can do.
1x-Mark of the Vampire -
1x-Unhallowed Pact
1x-Vampire Nighthawk -
Play at least 3 of these mainboard.
1x-Ajani's Sunstriker
2x-Angel's Mercy
1x-Attended Knight
1x-Captain's Call
1x-Crusader of Odric
1x-Defang
1x-Serra Avatar
1x-Urgent Exorcism