Mono-Black Midrange
A Modern deck, by Masonboy13
2nd place at a tournament in Magic Online on 2015-06-12

Maindeck:

Artifacts
4 Lashwrithe

Creatures
4 Bloodghast
4 Demigod of Revenge
4 Geralf's Messenger
1 Gray Merchant of Asphodel
2 Phyrexian Crusader
4 Phyrexian Obliterator

Instants
4 Dismember
2 Go for the Throat

Legendary Enchantment Artifacts
2 Whip of Erebos

Sorceries
3 Inquisition of Kozilek
4 Thoughtseize

Tribal Enchantments
1 Bitterblossom

Basic Lands
21 Swamp

Sideboard:
2 Fulminator Mage
2 Phyrexian Crusader
3 Bile Blight
2 Surgical Extraction
3 Deathmark
2 Self-Inflicted Wound