My initial reaction to Dpo was to combo with living death. But I think I can do better, how's this sound?
3 Death pit offering
4 Grave Pact (I think this is it, the black enchantment that forces opponent to sac a creature whenever you lose one)
4 Abyssal Gatekeeper
4 Culling of the weak
4 Blood Pet
3 Mind Swords
3 Peacekeeper
4 Blinding Angel
4 Wrath Of God
4 Chimeric Sphere
2 Chimeric Staff
2 Wave Of Reckoning
3 Forbidding Tower
2 Spawning Pool
7 Plains
7 Swamps
The idea is to stall, stall, stall, Death pit offering, crush w/ Blinding angel or other single creature, meanwhile dropping a nuke on an irregular basis. Mind you, this was just made up off the top of my head, so it's very rough, but the theme seems sound.