Mono-Black Vampires
A Pioneer deck, by James Johnston
2nd place at a tournament in Indianapolis, Indiana, United States on 2020-02-23

Maindeck:

Creatures
4 Champion of Dusk
4 Dusk Legion Zealot
4 Gifted Aetherborn
4 Knight of the Ebon Legion
4 Murderous Rider

Instants
4 Fatal Push
1 Grasp of Darkness

Legendary Creatures
3 Kalitas, Traitor of Ghet

Legendary Planeswalkers
4 Sorin, Imperious Bloodlord

Sorceries
4 Thoughtseize

Basic Lands
15 Swamp

Lands
4 Castle Locthwain
4 Mutavault

Legendary Lands
1 Urborg, Tomb of Yawgmoth

Sideboard:
2 Aethersphere Harvester
4 Leyline of the Void
1 Eat to Extinction
3 Grasp of Darkness
2 Davriel, Rogue Shadowmage
2 Duress
1 Infinite Obliteration