I played this deck at provincials and got into to top 8 and lost so I guess I got 6th. I will be straight up, didnt really test this deck before hand and just put a bunch of cards I liked together. My matchups against most decks I found was pretty good except ramp. This deck rolls over to wurmcoil engine I found. I will put my original list up then say what changes I would make to it.
Ok this is the list I ran. I found I sided out the Nantuko shades every game and didnt really work in the deck. I would probably replace them with a set of kalastria highborn's or just put the duress's in that slot. Also would of probably played a full set of doom blades and just run 1 grasp of darkness or another removal spell. If you have any questions about the deck just ask.
4x bloodghast
4x vampire hexmage
4x gatekeeper of malakir
4x abyssal persecutor
4x nantuko shade
2x viscera seer
2x molten-tail masticore
Instants/sorceries
3x grasp of darkness
2x doom blade
3x grim discovery
3x mind sludge
2x sword of vengeance
Lands
13x swamp
4x marsh flats
2x verdant catacombs
4x tectonic edge
3x memoricide
2x sadistic sacrament
4x duress
3x malakir bloodwitch
3x inquisition of kozilek
Ok this is the list I ran. I found I sided out the Nantuko shades every game and didnt really work in the deck. I would probably replace them with a set of kalastria highborn's or just put the duress's in that slot. Also would of probably played a full set of doom blades and just run 1 grasp of darkness or another removal spell. If you have any questions about the deck just ask.
4 Gatekeeper Of Malakir
4 Vampire Nighthawk
4 Skinrender
2 Grave Titan
1 Wurmcoill Engine
3 Doom Blade
3 Duress
3 Mind Sludge
3 Sign In Blood
25 Swamp
3 Malakir Bloodwitch
3 Nihil Spellbomb
3 Memoricide
3 Disfigure
3 Inquisition Of Kozilek
Deck Barn