4 Wasteland
3 Dark Depths
2 Urborg, Tomb of Yawgmoth
1 Strip Mine
11 Swamp
4 Dark Confidant
4 Vampire Hexmage
1 Necropotence
4 Dark Ritual
4 Leyline of the Void
4 Duress
4 Thoughtseize
1 Vampiric Tutor
1 Demonic Tutor
1 Imperial Seal
1 Demonic Consultation
1 Null Rod
3 Diabolic Edict
1 Helm of Obedience
1 Crucible of Worlds
1 Lotus Petal
1 Mox Jet
1 Black Lotus
1 Yawgmoth's Will
SB:
2 emissary of despair
2 ghost quarter
3 Null rod
1 darkblast
2 yixlid jailer
1 trinisphere
1 engineered explosives
1 snuff out
1 mana crypt (white bordered Spanish of course)
I'd like to think that I'm becoming a better pilot with this deck, and I'll definitely give your modifications above a run. It seems like you have opted to remove some of your anti-Oath cards though. Is this due to a shift in your meta? I'm definitely looking forward to reading your updated primer.