Edgar Markov Dark Paladins (EDH / Commander)

This deck combines the strength of the Vampire and Knight tribes by using a core of Innistrad/Ixalan Vampire Knights, some reliable non-Knight vampires, and a few hard-hitting non-Vampire Knights. It is a midrange deck that preys on other creature-based decks, but it also brings a versatile removal suite to keep it from being completely helpless against spell-based decks.

The Knight side of the deck offers you resilience. Normally, Wrath of God effects clobber midrange decks like this, but with the addition of Haakon, Stromgald Scourge and Knight Exemplar, this deck can shrug off death in proper vampiric fashion, while Aryel, Knight of Windgrace joins your arsenal of creatures-that-are-also-removal alongside Olivia Voldaren, Dark Impostor, and Drana, Kalastria Bloodchief.

Meanwhile, the Vampire side of the deck draws from a tribe with a very deep card pool: Olivia, Vona, Elenda, Crovax (Ascendant Evincar), Drana, Captivating Vampire, Twilight Prophet, and Sanctum Seeker are a formidable team of midrange creatures. With Forerunner of the Legion to help you find them, you have answers to anything another creature-based deck can throw at you.

In addition to these, the staple midrange tactic of graveyard recursion will help you grind out value. Haakon, Memorial to Folly, and Phyrexian Reclamation mean that death merely inconveniences your creatures, and Mistveil Plains will let you selectively return cards to your deck after using them. Because your creature base already gives you so many anti-creature effects, your interaction spells are skewed towards versatility: Bedevil over Terminate, Mortify over Doom Blade, and Wear // Tear over Vandalblast. Your interaction is also bent towards being fetchable with Sunforger, including not just Terminate effects, but Settle the Wreckage, Lapse of Certainty, and Kaya's Guile. Your anthem effects are skewed likewise: Ethereal Absolution clobbers token swarms and gives you a Scavenging Ooze ability, while Vanquisher's Banner & Icon of Ancestry provide draw engines. Lurking in your mana base is Vault of the Archangel, which you can think of as a pseudeo-anthem because of its effect on combat steps.

Interactions to note:
• Haakon's unique ability also lets you cast Nameless Inversion from your graveyard repeatedly, which won't always kill creatures, but will always create a Vampire at instant speed with Edgar's eminence ability.
• Final Parting is an expensive tutor, but you'll never waste a card with it because putting Haakon directly into your graveyard is usually better than putting him in your hand, and once you have Haakon, putting other Knights in your graveyard is as good as putting them in your hand.
• Mistveil Plains has the type Plains; it is fetchable.
• New Blood may look like just a black Control Magic, but remember, you can target your own creatures with it just for the type-rewriting effect. All of the non-Vampire Knights in this deck can be productively used as New Blood targets. As soon as someone else plays a creature with a tribal ability, though, you should probably look to use New Blood on that. Vampirized versions of Thunderbreak Regent, The Scarab God, Wirewood Channeler, or Patron Wizard are rare luxuries, so if you have the opportunity, you should definitely indulge.
• Boros Charm protects all permanents you control, not just your creatures.
• Stensia Bloodhall hasn't been reprinted since the change to the planeswalker damage rules. Its Oracle text lets it throw a Shock at target player or planeswalker, which people often forget.