Based on recent success of 'Slow Depths', I am changing the scope of this thread to reflect the more common decklists and strategies. I will leave the original text at the bottom, if anyone is interested in seeing where I was coming from at the time (December 2017.) Since then several decklists have popped up with good finishes on both MTGO and in paper tournaments.
In a nutshell, the Slow Depths version looks to play a better long game than all-in on getting a Marit Lage token. As the Depths/Stage combo has become much more common, seeing play in R/G Lands as well as splashed in other decks like Maverick, the metagame has adapted and is prepared to face the dreaded 20/20. R/G lands has a combo finish and an incredible grind/control plan but tends to do poorly against specific combo decks like Show and Tell and Storm. Turbo Depths has great discard-based disruption and a super fast clock but struggles against some of the other top tier decks like Miracles and Death and Taxes. Slow Depths attempts to bridge the gap between the ultra-grindy R/G Lands and the uber-fast Turbo Depths: discard based disruption but also ways to accrue card advantage over time. Dark Confidant, especially with the low curve of a Depths strategy, fits in perfectly for that strategy. Deathrite Shaman allows for some mild acceleration, still allowing for a turn 2 token, but also isn't just a linear element of mana acceleration but also a threat in and of itself. Lastly, and likely the most valuable part, is that having more creatures available in the deck takes the threat of Diabolic Edict, as well as other sacrifice effects, and manages it better.
Some slow lists play maindeck Sylvan Library, some play it in the sideboard like Turbo Depths. Most Slow lists play maindeck Abrupt Decay, which is almost strictly a sideboard card in Turbo Depths. Many Slow lists also include a transformative strategy with Tarmogoyf and/or Bitterblossom in the sideboard to further bolster the bad matchups. I liken the strategy to Tarmo-Twin from a bygone Modern age where opponents had to play around the combo but ended up losing to fair beats because of it.
*****Decklists*****
Eternal Weekend 2018, Legacy Main Event, Vladamir Arneuve, FIRST PLACE, 5/5/2018
http://mtgtop8.com/event?e=19135&d=320910&f=LE
MTGO Challenge, 5/28/2018, RedderTory FIRST PLACE, 5/28/2018
http://mtgtop8.com/event?e=19356&d=323083&f=LE
Both events used the same 75, unless I missed something.
25 LANDS
2 Bayou
1 Bojuka Bog
4 Dark Depths
2 Forest
1 Ghost Quarter
1 Sejiri Steppe
2 Swamp
4 Thespian's Stage
3 Urborg, Tomb of Yawgmoth
4 Verdant Catacombs
1 Wooded Foothills
14 CREATURES
3 Dark Confidant
4 Deathrite Shaman
3 Sylvan Safekeeper
4 Vampire Hexmage
17 INSTANTS and SORC.
3 Abrupt Decay
4 Crop Rotation
4 Duress
2 Sylvan Scrying
4 Thoughtseize
4 OTHER SPELLS
3 Pithing Needle
1 Sylvan Library
SIDEBOARD
1 Bitterblossom
1 Choke
1 Dread of Night
1 Grafdigger's Cage
1 Karakas
1 Krosan Grip
1 Liliana, the Last Hope
1 Marsh Casualties
1 Maze of Ith
2 Rite of Consumption
3 Surgical Extraction
1 Toxic Deluge
SCG Team Open Baltimore, Jody Keith, THIRD PLACE, 4/29/2018
This is a slight variation where the transformative plan is emphasized more with Bitterblossom/Tarmogoyf in the sideboard, and going deeper into discard with Cabal Therapy out of the board. He is also trimming slightly on Safekeeper for the 4th Pithing Needle, but he also took a similar list to 10th place in Atlanta with the usual 3 Safekeeper/3 Needle (and a 3rd Bitterblossom in the board.) Link to that list: http://mtgtop8.com/event?e=19089&d=320420&f=LE
http://mtgtop8.com/event?e=19142&d=320987&f=LE
LANDS
2 Bayou
1 Bojuka Bog
4 Dark Depths
2 Forest
1 Ghost Quarter
1 Misty Rainforest
1 Sejiri Steppe
2 Swamp
4 Thespian's Stage
3 Urborg, Tomb of Yawgmoth
4 Verdant Catacombs
14 CREATURES
4 Dark Confidant
4 Deathrite Shaman
2 Sylvan Safekeeper
4 Vampire Hexmage
17 INSTANTS and SORC.
3 Abrupt Decay
4 Crop Rotation
4 Duress
2 Sylvan Scrying
4 Thoughtseize
4 OTHER SPELLS
4 Pithing Needle
SIDEBOARD
2 Bitterblossom
2 Cabal Therapy
1 Dread of Night
1 Grafdigger's Cage
1 Karakas
1 Krosan Grip
1 Marsh Casualties
1 Maze of Ith
1 Sorcerous Spyglass
2 Surgical Extraction
2 Tarmogoyf
{Below is my original post, take of it what you will.}
Good day to you all, I've been developing this deck for a little while as a result of trying to incorporate a miser's Dark Depths combo into a mid-range, black-green shell. I toyed around with a Nic-Fit shell for a little while, but that seemed to be much worse than doing traditional threats in that deck. What I gathered from reading the threads in that direction (Nic Fit/Maverick) was that Crop Rotation is a legitimate utility card, sometimes as a 1-2-of for utility lands and feeding Knight of the Reliquary. I also tried the combo in B/g Pox, and again, it was ok but not ideal. I had to be dedicated to the loam engine and 26-27 lands. I also couldn't feasibly run Dark Confidant with Smallpox/Pox being a focal point, and Bob has shown itself to be one of the best cards in my current list. The best performing version to-date plays a much better game with a ton of good stuff cards like Dark Confidant and Deathrite Shaman. It feels a lot like Splinter Twin in modern when that was legal: threaten the combo, but when people hold up interaction for that you can win with your other powerful cards. I'm even testing out 4x Tarmogoyf in the sideboard as a way to transition g2-3 after folks over-prepare for Crop Rotation. In my metagame there are several Chalice/Stompy variants as well, so hedging against Chalice@1 works well post-board. I also want to incorporate the Gitaxian Probe/Cabal Therapy synergy (why does Storm get to have all the fun?) Therapy is an excellent way to utilize extra copies of Dark Confidant.
One of the things that also really appeals to me is that Vampire Hexmage isn't just a one-trick-pony but rather a versatile utility creature that deals with a lot of threats in the legacy metagame. Jace, Chalice of the Void, and even Liliana are all still played quite a bit. First strike isn't insignificant either. While Dark Confidant, Vampire Hexmage, and Deathrite Shaman are fairly anemic threats on their own, the card advantage from Bob and the Dr are enough to get there when backed up with good disruption. I originally posted this in the Eva-Green thread, but it died off quickly during the Miracles Overlord era. With Counterbalance a seldom seen card now, it opens up more low-curve non-Vial options.
Here's the list I played yesterday at a weekly event, went 2-2 playing against mono-black Pox twice (weird, I know...), Dragon Stompy, and a homebrewed Eldrazi and Taxes Stompy variant (eldrazi with Thalia.) I beat Pox and Eldrazi Stompy, lost to Dragon Stompy and the other Pox deck. It felt like any other rock/good stuff deck where I was always in the game but lost to small edges or lock pieces. Dark Confidant was absolutely amazing, gave me a chance where I wouldn't otherwise have one.
Creatures - 12
4x Deathrite Shaman
4x Dark Confidant
4x Vampire Hexmage
Discard/Probe
4x Cabal Therapy
3x Thoughtseize
3x Gitaxian Probe
2x Hymn to Tourach
Removal/PW's
2x Abrupt Decay
2x Fatal Push
1x Maelstrom Pulse
2x Liliana of the Veil
Combo/Card Advantage
4x Crop Rotation
1x Life from the Loam
1x Sylvan Library
Lands
4x Wasteland
4x Verdant Catacombs
2x Windswept Heath
1x Bayou
2x Blooming Marsh
3x Swamp
1x Forest
1x Dark Depths
1x Thespian's Stage
4x Urborg
Sideboard
4x Tarmogoyf
2x Choke
2x Surgical Extraction
2x Golgari Charm
2x Diabolic Edict
1x Karakas
1x Maze of Ith
1x Bojuka Bog
I wonder if a 2nd Library is better than the singleton Loam, which is really only there as a value card for Wasteland recursion or getting back Depths if dealt with. It feels really solid, but I can't help but think that I might be missing something. I think my removal is a bit narrow, Decay and Push overlapping quite a bit. Maybe a better creature removal that hits bigger things? I know Maze/Edict/Karaks do work out of the board but maybe my maindeck approach to removal is weak. Not sure, maybe its fine. I know I need more Bayous (working on it...) but for now Marsh has been surprisingly fine.
BTW, 'play turbo depths' is not a helpful comment, if you feel so inclined. Beyond that I hope to develop this deck further into a B/g value deck with the option of a quick combo.