Cavern of Souls

As Cavern of Souls enters the battlefield, choose a creature type. {T}: Add {1} to your mana pool. {T}: Add one mana of any color to your mana pool. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Azusa, Lost but Seeking

You may play two additional lands on each of your turns.

Tolaria West

Tolaria West comes into play tapped. {T}: Add {U} to your mana pool. Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with converted mana cost 0, reveal it, and put it into your hand. Then shuffle your library. Play only as a sorcery.)

Snow-Covered Forest

{T}: Add {G} to your mana pool.

Obstinate Baloth

When Obstinate Baloth enters the battlefield, you gain 4 life. If a spell or ability an opponent controls causes you to discard Obstinate Baloth, put it onto the battlefield instead of putting it into your graveyard.

Radiant Fountain

When Radiant Fountain enters the battlefield, you gain 2 life. {T}: Add {1} to your mana pool.

Reclamation Sage

When Reclamation Sage enters the battlefield, you may destroy target artifact or enchantment.

Summoner's Pact

Search your library for a green creature card, reveal it, and put it into your hand. Then shuffle your library. At the beginning of your next upkeep, pay {2}{G}{G}. If you don't, you lose the game.

Engineered Explosives

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.) {2}, Sacrifice Engineered Explosives: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Engineered Explosives.

Beast Within

Destroy target permanent. Its controller puts a 3/3 green Beast creature token onto the battlefield.

Gruul Turf

Gruul Turf enters the battlefield tapped. When Gruul Turf enters the battlefield, return a land you control to its owner's hand. {T}: Add {R}{G} to your mana pool.

Allosaurus Rider

You may remove two green cards in your hand from the game rather than pay Allosaurus Rider's mana cost. Allosaurus Rider's power and toughness are each equal to 1 plus the number of lands you control.

Dismember

({B/P} can be paid with either {B} or 2 life.) Target creature gets -5/-5 until end of turn.

Primeval Titan

Trample Whenever Primeval Titan enters the battlefield or attacks, you may search your library for up to two land cards, put them onto the battlefield tapped, then shuffle your library.

Griselbrand

Flying, lifelink Pay 7 life: Draw seven cards.

Vesuva

As Vesuva comes into play, you may choose a land in play. If you do, Vesuva comes into play tapped as a copy of the chosen land.

Gemstone Mine

When Gemstone Mine comes into play, put three mining counters on it. {T}, Remove a mining counter from Gemstone Mine: Add one mana of any color to your mana pool. If there are no mining counters on Gemstone Mine, bury it.

Amulet of Vigor

Whenever a permanent enters the battlefield tapped and under your control, untap it.

Bojuka Bog

Bojuka Bog enters the battlefield tapped. When Bojuka Bog enters the battlefield, exile all cards from target player's graveyard. {T}: Add {B} to your mana pool.

Valakut, the Molten Pinnacle

Valakut, the Molten Pinnacle enters the battlefield tapped. Whenever a Mountain enters the battlefield under your control, if you control at least five other Mountains, you may have Valakut, the Molten Pinnacle deal 3 damage to target creature or player. {T}: Add {R} to your mana pool.

Wooded Foothills

Chameleon Colossus

Ghost Quarter

Golgari Rot Farm

Simic Growth Chamber

Eldritch Evolution

Breeding Pool

({T}: Add {G} or {U}.) As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Arboreal Grazer

Reach When Arboreal Grazer enters the battlefield, you may put a land card from your hand onto the battlefield tapped.

Forest

({T}: Add {G}.)