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.

Slayers' Stronghold

{T}: Add {1} to your mana pool. {R}{W}, {T}: Target creature gets +2/+0 and gains vigilance and haste until end of turn.

Azusa, Lost but Seeking

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

Ruric Thar, the Unbowed

Vigilance, reach Ruric Thar, the Unbowed attacks each turn if able. Whenever a player casts a noncreature spell, Ruric Thar deals 6 damage to that player.

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.)

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.

Hornet Queen

Flying Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) When Hornet Queen enters the battlefield, put four 1/1 green Insect creature tokens with flying and deathtouch onto the battlefield.

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.

Pact of Negation

Counter target spell. At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.

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.

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.

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.

Sunhome, Fortress of the Legion

{T}: Add {1} to your mana pool. {2}{R}{W}, {T}: Target creature gains double strike until end of turn.

Ancient Stirrings

Look at the top five cards of your library. You may reveal a colorless card from among them and put it into your hand. Then put the rest on the bottom of your library in any order. (Cards with no colored mana in their mana costs are colorless. Lands are also colorless.)

Sakura-Tribe Scout

{T}: You may put a land card from your hand into play.

Firespout

Firespout deals 3 damage to each creature without flying if {R} was spent to play Firespout and 3 damage to each creature with flying if {G} was spent to play it. (Do both if {R}{G} was spent.)

Relic of Progenitus

{T}: Target player removes a card in his or her graveyard from the game. {1}, Remove Relic of Progenitus from the game: Remove all graveyards from the game. Draw a card.

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.

Explore

You may play an additional land this turn. Draw a card.

Khalni Garden

Khalni Garden enters the battlefield tapped. When Khalni Garden enters the battlefield, put a 0/1 green Plant creature token onto the battlefield. {T}: Add {G} to your mana pool.

Boros Garrison

Ghost Quarter

Simic Growth Chamber

Tireless Tracker

Emrakul, the Promised End

Walking Ballista

Abrade

Spell Pierce

U

Adventurous Impulse

Look at the top three cards of your library. You may reveal a creature or land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Forest

({T}: Add {G}.)