Oddly enough, I wouldn't bother with SDT in mono B, but it seems quite nice in B/G (if a little durdly, but then this is always the case with Top). It has a really nice synergy with Loam where I can look before my draw step and choose whether to draw one of the top three cards or dredge lands/useless cards. I can also tap Top to draw a card, dredge 3 instead, and put Top back on the library (which can help Loam evade extractions, etc). I was always happy to see it, though it should be noted that I was playing against a similarly grindy deck (my friend's mono-B discard Pox). That said, it isn't a play I would look to make turn 1 (Land, IoK or Land, Mox, Hymn/Smallpox/Sinkhole is definitely where I'm looking to be).
I'll definitely try out the Library after playing a little more with my current list (ideally against something that provides more early pressure), but I think I'll need to reconfigure it in order to support Library (I'll probably try making room Syphon Life or possibly splash W for Nomad Stadium).
I actually didn't bother with Scroll as I was concerned about the conflict it would have with Loam (note that I'd also had the benefit of seeing one of Ali Aintrazi's matches when he placed with his Loam Pox list and it was clearly a problem for him). I figured Cabal Pit could do a similar job, except it obviously can't win the game (which is obviously an important consideration in itself).
The trouble I'm having is that that I can't think of many viable win conditions: The Rack can be played around (though it can be powerful with an active Lili to lock it in) and Tombstalker/Phyrexian Obliterator need a Volrath's Stronghold and either Bitterblossom, Bloodghast or Lingering Souls to support it (and I'm concerned that this may be too clunky and too susceptible to a top-decked StP, plus the x/1 creatures can be subjected to any anti-TNN hate). The cmc for Worm Harvest seems awkward to me (and again produces x/1s), the Dark Depths combo seems to be too random and clumsy here and Haunted Plate Mail seems worse than Nantuko Monastery. Any suggestions on this front would be greatly appreciated!
I'd like to make room for 1-2 Crop Rotation, as the one-of Tabernacle and Cabal Pit were too random and couldn't be supported by my single Entomb (given that it's primary purpose was to get Loam/Nether Spirit online). Of course, the question is what to cut.
By the way, I came across a card called
Nostalgic Dreams the other day. Do you think this has potential with Loam, or is it a bit too slow/cute (or possibly doesn't do enough without Loam)?
For reference, this is what I currently have sleeved up:
LANDS (26):
2
Swamp,
1
Forest,
3
Bayou,
4
Verdant Catacombs,
3
Urborg, Tomb of Yawgmoth,
4
Wasteland,
4
Mishra's Factory,
2
Barren Moor,
1
Cabal Pit,
1
The Tabernacle at Pendrell Vale,
1
Bojuka Bog.
ARTIFACTS (6):
4
Mox Diamond,
2
Sensei's Divining Top.
CREATURES (1):
1
Nether Spirit.
INSTANTS & SORCERIES (23):
3
Inquisition of Kozilek,
1
Raven's Crime,
3
Abrupt Decay,
4
Hymn to Tourach,
4
Sinkhole,
4
Smallpox,
1
Maelstrom Pulse,
1
Entomb,
2
Life from the Loam.
PLANESWALKERS (4):
4
Liliana of the Veil.
SIDEBOARD:
To be developed, though it seems likely I'll be trying something along the lines of 2 Needles, 2 Toxic Deluge (one of these might replace the main deck Pulse), a second Pulse, 2 Chains of Mephistopheles, ~3 E Plague, 1 Karakas, 2 Nihil Spellbomb (with two slots TDB), though I need to give this a lot more thought (I wanted to get my 60 somewhere near first).