After testing with Peer Through Depths (6 flex slots--4 Peer 2 Sleight of Hand), that card has failed me too many times. After playing around 4 goldfish games, that card has whiffed entirely twice. Unless we take out some of the artifacts from the deck, I don't think Peer works often enough to be worth it.
Since I think UB Tempo's curve should be pretty low, I highly prefer Darkslick Shores, as it often ETB untapped and doesn't need other specific lands to ETB untapped.
Most Jund builds are already playing 3-4 Liliana of the Veil, which naturally is a card that wants to pitch cards to the graveyard that have some sort of recursion, or potential value from the yard. Without the Punishing Fire cheat, of pitching fires only to buy it back, there is no way to "cheat" liliana's +1 in a standard jund deck.
There's the obvious way of "cheating" Liliana's +1 in Jund--dump your hand and pray your opponent didn't. That's why I like Liliana 2.0 as a 2-of in Jund or any black-based, non-blue-based (aggro-)control deck--you're probably dumping your hand relatively fast (so your hand is nigh-empty when you reach her), and she's also creature control.
I also tend to ditch excess targeted discard to her +1.
If you forget to disrupt Pyromancer Ascension and/or Past in Flames, the UR Storm decks that have been rocking the Modern Dailies can very easily cast 2+ Grapeshots with 15+ Storm each in a single turn. (I've tested them, and those decks can often draw their entire library in one turn.)
It's very rough, and my curve is probably horrible. After seeing a Dark Bant list use Thirst for Knowledge along with Aether Vial, I'm trying that out, too.
Jund wins, while 2 UR Storm decks, Ad Nauseam-Angel's Grace, 3 Melira Pod decks, Twin Pod (4 Combusts maindeck?!? Also, it's actually more of a RUG Goodstuffs Pod deck, as it has 1 Exarch, 1 Kiki-Jiki, and 0 Pestermite), UW Control, and another Jund deck get close.
Red Affinity wins (go Etched Champion maindeck! I never could personally use Atog effectively), while UW Polymorph Tokens (how many appearances should this have before I move this archetype out of Rogue?), Melira Podless Combo, two Tribal Blue Zoo lists, Jund, an unusual Through the Breach deck, an unusually top-heavy Next Level Blue deck, UW Control (no board wipes main), and Martyr Proc (with Sun Titan) get close.
UR Storm wins, while Erayo Affinity, UW Tron, and two Jund decks (one looks a lot like Standard Jund, while the other unusually splashes blue for Tiago) get close.
Jund and the rogue GW Aggro deck win, while Red Affinity, another Jund, Ad Nauseam-Angel's Grace, two UR Storm lists, Dimir Teachings, Sunny Side Up (with Krark-Clan Ironworks), UW Polymorph Tokens, and a 5cc Gifts Reanimator deck get close.
Hive Mind wins, while Esper Teachings (with manlands, Tiago, V. Clique, and White Sun's Zenith as the only win cons), UW Tron, another Hive Mind, and Jund get close.
UR Storm wins (wow, these maindecks get boring), while another UR Storm, Melira Pod, RDW with a green splash for sideboard hate (I'll call it Gruul Deck Wins), Ad Nauseam-Angel's Grace, and UW Tron get close.
Bant Aggro wins, while Melira Pod (Ethersworn Canonist maindeck--everyone hates UR Storm), Gruul Deck Wins, two Jund lists, Merfolk with a black splash, and UR Storm get close.
Will UR Storm keep getting at least one 3-1 a day? Will it finally get hated out by the end of this month? Who knows?
After a bit of testing with a blue splash, Pestermite has proven itself to be pretty dang funny. You can flash it in to tap your opponents' attackers or blockers, untap Mangara, untap your own men so they can become blockers, tap lands, or the funnest interaction--untap Aether Vial and flash something else in.
Minamo is a fine land for Mangara, as usual, and Moorland Haunt has proven valuable. Against control, it makes more men than they can keep up with. Against aggro, it makes enough chump blockers so you can fly over for the win. And the tokens fly, keeping up with the sub-theme of flying attackers!
For the blue splash, I think Seachrome Coast is the best non-fetch, non-shock dual, as it isn't painful and it often ETB untapped.
I'm really not certain whether Vendilion Clique belongs in the same deck as Leonin Arbiter, especially if you're using 6+ colourless lands. I sort of think the colours get really hard to support at this point.
This leaves as goyfs and knights as the main threats. Their goyfs and knights will NEVER be as big as yours (I have yet to play a single game where that was not the case) and if they are not holding a path then they will be hurting.
Your KotRs will be bigger, no doubt, but since you run 0 creatures with Exalted (or Adventuring Gear or other sources of pump), your Goyfs will always be as big as theirs. Remember, Tarmogoyf counts the number of card types in all graveyards. There's a reason why people refer to "Goyf Wars" by that name.
You should stick some basic lands in your deck--probably instead of the Ancient Ziggurats, as you run non-creature spells and your spell base doesn't look too demanding. What do you do otherwise if your opponent hits you with Path to Exile or Ghost Quarter?
Wow, those are almost exactly my numbers on Page 6! Glad to see I'm not miscounting significantly.
However, the Esper decks are significantly different: from my count, 5 of them play 3+ Gifts Ungiven, and the other 6 play 2+ Mystical Teachings. The ones with Mystical Teachings are generally called Teachings decks.
Also, there was one UW deck with the Urza's lands--that deck is known as Tron.
I'm pretty certain you want blue mana on Turn 1 (Spell Snare), so I'd be cautious with how many lands that ETB tapped (e.g. Zendikar manlands) you put in your deck.
People generally put a ton of redundancy into their mana bases. However, a deck can get away with as few as 13 lands that produce coloured mana (see Legacy's Tempo Thresh) as long as it also has incredible dig.
As another example, Tron decks run at least 12 colourless lands, and they'll probably use at least 13 other lands.
There's the obvious way of "cheating" Liliana's +1 in Jund--dump your hand and pray your opponent didn't. That's why I like Liliana 2.0 as a 2-of in Jund or any black-based, non-blue-based (aggro-)control deck--you're probably dumping your hand relatively fast (so your hand is nigh-empty when you reach her), and she's also creature control.
I also tend to ditch excess targeted discard to her +1.
3 Tectonic Edge
3 Ghost Quarter
1 Moorland Haunt
1 Buried Ruin
4 Seachrome Coast
1 Celestial Colonnade
2 Hallowed Fountain
2 Mystic Gate
2 Minamo, School at Water's Edge
3 Plains
1 Island
Creatures
2 Student of Warfare
4 Leonin Arbiter
3 Aven Mindcensor
4 Mangara of Corondor
3 Pestermite
4 Flickerwisp
2 Stonecloaker
1 Geist of Saint Traft
4 AEther Vial
4 Path to Exile
2 Thirst for Knowledge
1 Sword of Feast and Famine
1 Mimic Vat
1 Crystal Shard
1 Crucible of Worlds
4 Ethersworn Canonist
3 Meddling Mage
2 Spell Pierce
3 Phyrexian Revoker
2 Tormod's Crypt
1 Mindbreak Trap
It's very rough, and my curve is probably horrible. After seeing a Dark Bant list use Thirst for Knowledge along with Aether Vial, I'm trying that out, too.
Jund wins, while 2 UR Storm decks, Ad Nauseam-Angel's Grace, 3 Melira Pod decks, Twin Pod (4 Combusts maindeck?!? Also, it's actually more of a RUG Goodstuffs Pod deck, as it has 1 Exarch, 1 Kiki-Jiki, and 0 Pestermite), UW Control, and another Jund deck get close.
5th Modern Daily on 12/27/2011: http://www.wizards.com/Magic/Digital/MagicOnlineTourn.aspx?x=mtg/digital/magiconline/tourn/3193048
Red Affinity wins (go Etched Champion maindeck! I never could personally use Atog effectively), while UW Polymorph Tokens (how many appearances should this have before I move this archetype out of Rogue?), Melira Podless Combo, two Tribal Blue Zoo lists, Jund, an unusual Through the Breach deck, an unusually top-heavy Next Level Blue deck, UW Control (no board wipes main), and Martyr Proc (with Sun Titan) get close.
1st Modern Daily on 12/28/2011: http://www.wizards.com/Magic/Digital/MagicOnlineTourn.aspx?x=mtg/digital/magiconline/tourn/3193065
UR Storm wins, while Erayo Affinity, UW Tron, and two Jund decks (one looks a lot like Standard Jund, while the other unusually splashes blue for Tiago) get close.
2nd Modern Daily on 12/26/2011: http://www.wizards.com/Magic/Digital/MagicOnlineTourn.aspx?x=mtg/digital/magiconline/tourn/3192984
An unusual Team Italia (BWR) deck wins, while Rakdos Deck Wins, UW Control, 5cc Cruel Control, and Merfolk with a white splash get close.
3rd Modern Daily on 12/26/2011: http://www.wizards.com/Magic/Digital/MagicOnlineTourn.aspx?x=mtg/digital/magiconline/tourn/3192998
Jund and the rogue GW Aggro deck win, while Red Affinity, another Jund, Ad Nauseam-Angel's Grace, two UR Storm lists, Dimir Teachings, Sunny Side Up (with Krark-Clan Ironworks), UW Polymorph Tokens, and a 5cc Gifts Reanimator deck get close.
1st Modern Daily on 12/27/2011: http://www.wizards.com/Magic/Digital/MagicOnlineTourn.aspx?x=mtg/digital/magiconline/tourn/3193020
Hive Mind wins, while Esper Teachings (with manlands, Tiago, V. Clique, and White Sun's Zenith as the only win cons), UW Tron, another Hive Mind, and Jund get close.
2nd Modern Daily on 12/27/2011: http://www.wizards.com/Magic/Digital/MagicOnlineTourn.aspx?x=mtg/digital/magiconline/tourn/3193013
UR Storm wins (wow, these maindecks get boring), while another UR Storm, Melira Pod, RDW with a green splash for sideboard hate (I'll call it Gruul Deck Wins), Ad Nauseam-Angel's Grace, and UW Tron get close.
3rd Modern Daily on 12/27/2011: http://www.wizards.com/Magic/Digital/MagicOnlineTourn.aspx?x=mtg/digital/magiconline/tourn/3193007
Bant Aggro wins, while Melira Pod (Ethersworn Canonist maindeck--everyone hates UR Storm), Gruul Deck Wins, two Jund lists, Merfolk with a black splash, and UR Storm get close.
Will UR Storm keep getting at least one 3-1 a day? Will it finally get hated out by the end of this month? Who knows?
Minamo is a fine land for Mangara, as usual, and Moorland Haunt has proven valuable. Against control, it makes more men than they can keep up with. Against aggro, it makes enough chump blockers so you can fly over for the win. And the tokens fly, keeping up with the sub-theme of flying attackers!
For the blue splash, I think Seachrome Coast is the best non-fetch, non-shock dual, as it isn't painful and it often ETB untapped.
I'm really not certain whether Vendilion Clique belongs in the same deck as Leonin Arbiter, especially if you're using 6+ colourless lands. I sort of think the colours get really hard to support at this point.
Your KotRs will be bigger, no doubt, but since you run 0 creatures with Exalted (or Adventuring Gear or other sources of pump), your Goyfs will always be as big as theirs. Remember, Tarmogoyf counts the number of card types in all graveyards. There's a reason why people refer to "Goyf Wars" by that name.
4 Darkslick Shores
2 Creeping Tar Pit
4 Sulfur Falls
1 Sunken Ruin
1 Drowned Catacomb
4 Scalding Tarn
1 Steam Vents
1 Watery Grave
3 Island
1 Snow-Covered Mountain
1 Swamp
Creatures
4 Delver of Secrets
4 Dark Confidant
4 Snapcaster Mage
4 Lightning Bolt
2 Terminate
3 Spell Snare
1 Countersquall
2 Cryptic Command
2 Rise//Fall
4 Blightning
2 Molten Rain
1 Suffer the Past
4 Serum Visions
3 Deathmark
4 Inquisition of Kozilek
2 Shattering Spree
2 Molten Rain
2 Sorin's Thirst
1 Surgical Extraction
1 Suffer the Past
It's more early-game to midrange and has a nice "You will bleed to death" sub-theme.
It seems tuned for a metagame with lots of Storm decks and graveyard-abusing decks, though.
However, the Esper decks are significantly different: from my count, 5 of them play 3+ Gifts Ungiven, and the other 6 play 2+ Mystical Teachings. The ones with Mystical Teachings are generally called Teachings decks.
Also, there was one UW deck with the Urza's lands--that deck is known as Tron.
People generally put a ton of redundancy into their mana bases. However, a deck can get away with as few as 13 lands that produce coloured mana (see Legacy's Tempo Thresh) as long as it also has incredible dig.
As another example, Tron decks run at least 12 colourless lands, and they'll probably use at least 13 other lands.