Lands is one of the most popular archetypes in Legacy. The way it controls the game and eventually wins is a fan favorite. The other deck everybody consistently asks to see? Yup, Jund.
Jund is the king of interaction. Powerful discard spells kick things off, with Thoughtseize and Hymn to Tourach. Making sure you can take your opponent’s threats or perhaps mess up their plans through one of the most broken cards in Magic’s history is part of what makes black midrange decks such a Legacy force.
The creature suite Jund offers is also incredibly strong. Deathrite Shaman is an accelerator, life buffer, and a win condition. It’s also a disruption spell against Reanimator, Dredge, Past in Flames, Snapcaster Mage, flashback spells, Tarmogoyf, and more. Dark Confidant offers greatness at any cost (also the curve is very low in this deck, so you’re looking at about 1 damage per upkeep).
From the Lands side of the deck, the brightest star is Crop Rotation. Being able to play a toolbox of various lands gives the deck reach and interaction. Expedition Map plays a similar role, albeit more slowly than Crop Rotation, but you don’t have to sacrifice a land. This allows you to fetch up cards like Karakas and The Tabernacle at Pendrell Vale, which are important tools in a variety of matchups. They also get the combo.
Thespian’s Stage and Dark Depths form a 2-card combo that will win the game against many decks in the format. Without access to Swords to Plowshares or Terminus, there isn’t much to deal with a 20/20 flying indestructible creature. You can also make it at instant speed, and even more instantaneously with a Crop Rotation. This is one of the most powerful and exciting combinations in all of Legacy and what really makes a deck like this work.
As if that wasn’t enough, there’s Vampire Hexmage as another weapon to use with Dark Depths to get the 20/20 right away. Hexmage has some extra utility in being able to kill opposing planeswalkers, like a Jace, the Mind Sculptor, and it can even block some Elves or Merfolk in a pinch. You can also accelerate out your combo in this deck by playing a turn-1 Dark Depths (of which you have 4) into a turn-2 Urborg, Tomb of Yawgmoth (of which you also have 4). You can now tap both for black and cast a Vampire Hexmage. You can even replace one of the lands with any green source and Crop Rotation for the missing Urborg or Depths, for even more ways to turn 2.
At that point, you can pass the turn with your Hexmage and Depths on the table, ready to respond to anything they do, to use when they tap out, or to continue to wait for a better time since you need 0 mana to go through the combo. You can expect an opponent to pass more often than not in this situation to try to bluff something—anything! At that point, you can make your 20/20 or just untap and start casting discard spells, as you will never need any mana to actually activate your Hexmage and summon forth a Marit Lage.
BG Lands is definitely a deck you should check out if you enjoy the midrange interaction of Jund with some powerful combo potential. This is a really resilient Legacy deck with some powerful angles of attack!