Another famous archtype long ago sent to the T1.5 leagues, yet can still make an impact on T1 tournies ... especially with changes that have come out to help the old Sui decks.
The one thing that frustrastes me so much about Sui is the lack of dealing with artifacts/enchantments -- and that consistent damage one takes giving one a fast clock. So Sui is strictly an Aggro deck -- with some distinct control elements.
Now Black is long known to have Disruption, Graveyard Manipulation, Land Destruction, Creature kill -- and now with Sacred Sacrament -- it adds Library Milling to it's style. But, black decks though solid -- have ALWAYS had a bad reputation vrs Combo decks -- and nobody I know uses Lich/Mirror Universe anymore (although it was an awesome combo)
So ... Vampire Hexmage & Dark Depths which has been heavily abused -- is the new combo.
Meta -- locally -- Aggro/Control (BW, UW, Elves, MBC, Mono-U, etc ..). Artifacts are rare, no power to be seen as most folks are T1.X/T2 players.
My current deck
1 Strip Mine
4 Wasteland - standard in any T1 deck
11 Swamp - seems smooth (no mulligans) -- but I might need a bit more mana it seems.
1 Lotus Petal
1 Jet Mox
1 Black Lotus
2 Umizawa's Jitte -- With all the self-damage, these are critical for the life gain ..

*4 Tutors -- I felt with 12 critters and the combo here -- I needed the 4 tutors for definate silver bullets to take care of issues.
1 Vampiric Tutor
1 Demonic Tuttor
1 Grim Tutor
1 Imperial Seal
*Standard Black Deck Win conditions ..

1 Yawgs Will
1 Necropotence
1 Tendril
4 Duress
4 Thoughtseize
4 Diabolic Edict
4 Dark Ritual
4 Sacred Sacrament - the Milling card -- It hits combo decks and control decks hard - needs more playtesting.
4 Vampire Hexmage - The 1st half of the combo.
4 Gatekeepers of Malakir - needed for critter saccing. Works with the Edicts.
4 Dark COnfidant - Draw engine -- so with Necro, it makes for 5 cards as a draw engine.
What I need to figure out is where to add my 2 Dark Depths to form the combo...and so what to take out for those 2 cards.
For those who haven't seen it -- it goes something like this
Turn 1 -- Lay down Mox/Petal or Lotus -- Black Mana -- Lay down Vampire Hexmage, Lay down Dark Depths with 10 counters. Sac Hexmage to take off the counters -- DD becomes a 20/20 flying beat stick from hell -- swing for 20.
Now that's what I call a viable T1 1 turn kill ..

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So now as far as Sacrament -- the new Milling aspect seems quite good -- but VERY expensive mana wise. It has a kicker of 7 .. ouch, but it's worth it if you can pull it off. Normally it mills 3 cards, but with the kicker, it mills 15 cards ....But with the cost of the kicker -- I am not sure (yet) if the card is worth it. SOme swear by it -- but I wanna playtest it more and see how it does.