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.

Xenagos, God of Revels

Indestructible As long as your devotion to red and green is less than seven, Xenagos isn't a creature. At the beginning of combat on your turn, another target creature you control gains haste and gets +X/+X until end of turn, where X is that creature's power.

Boreal Druid

{T}: Add {1} to your mana pool.

Prossh, Skyraider of Kher

Flying When you cast Prossh, Skyraider of Kher, put X 0/1 red Kobold creature tokens named Kobolds of Kher Keep onto the battlefield, where X is the amount of mana spent to cast Prossh. Sacrifice another creature: Prossh gets +1/+0 until end of turn.

Toxic Deluge

As an additional cost to cast Toxic Deluge, pay X life. All creatures get -X/-X until end of turn.

Dryad Arbor

(Dryad Arbor isn't a spell, it's affected by summoning sickness, and it has "{T}: Add {G} to your mana pool.") Dryad Arbor is green.

Grove of the Burnwillows

{T}: Add {1} to your mana pool. {PT}: Add {R} or {G} to your mana pool. Each opponent gains 1 life.

Magus of the Moon

Nonbasic lands are Mountains.

Fire Covenant

Fire Covenant deals X damage, divided any way you choose among any number of target creatures, where X is equal to the amount of life you pay. Effects that prevent or redirect damage cannot be used to counter this loss of life.

Fyndhorn Elves

{T}: Add {G} to your mana pool. Play this ability as an interrupt.

Kessig Wolf Run

{T}: Add {1} to your mana pool. {X}{R}{G}, {T}: Target creature gets +X/+0 and gains trample until end of turn.

Reclamation Sage

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

Shared Animosity

Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it.

Skeletal Scrying

As an additional cost to play Skeletal Scrying, remove X cards in your graveyard from the game. You draw X cards and you lose X life.

Coalition Relic

{T}: Add one mana of any color to your mana pool. {T}: Put a charge counter on Coalition Relic. At the beginning of your precombat main phase, remove all charge counters from Coalition Relic. Add one mana of any color to your mana pool for each counter removed this way.

Diabolic Intent

As an additional cost to play Diabolic Intent, sacrifice a creature. Search your library for a card and put that card into your hand. Then shuffle your library.

Bitterblossom

At the beginning of your upkeep, you lose 1 life and put a 1/1 black Faerie Rogue creature token with flying onto the battlefield.

Cultivate

Search your library for up to two basic land cards, reveal those cards, and put one onto the battlefield tapped and the other into your hand. Then shuffle your library.

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.

Elvish Mystic

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

Dark Confidant

At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its converted mana cost.

Chord of Calling

Convoke (Each creature you tap while playing this spell reduces its cost by {1} or by one mana of that creature's color.) Search your library for a creature card with converted mana cost X or less and put it into play. Then shuffle your library.

Abrupt Decay

Abrupt Decay can't be countered by spells or abilities. Destroy target nonland permanent with converted mana cost 3 or less.

Deathrite Shaman

{T}: Exile target land card from a graveyard. Add one mana of any color to your mana pool. {B}, {T}: Exile target instant or sorcery card from a graveyard. Each opponent loses 2 life. {G}, {T}: Exile target creature card from a graveyard. You gain 2 life.

Dreadbore

Destroy target creature or planeswalker.

Devoted Druid

{T}: Add {G} to your mana pool. Put a -1/-1 counter on Devoted Druid: Untap Devoted Druid.

City of Brass

Whenever City of Brass becomes tapped, it deals 1 damage to you. {T}: Add one mana of a color of your choice to your mana pool.

Grim Tutor

Search your library for a card and put that card into your hand. You lose 3 life.

Reflecting Pool

{T}: Add to your mana pool one mana of any type that any land you control can produce.

Goblin Bombardment

Sacrifice a creature: Goblin Bombardment deals 1 damage to target creature or player.

Earthcraft

Tap an untapped creature you control: Untap target basic land.

Karplusan Forest

{T}: Add {1} to your mana pool. {T}: Add {R} or {G} to your mana pool. Karplusan Forest deals 1 damage to you.

Elves of Deep Shadow

{T}: Add {B} to your mana pool, and Elves of Deep Shadow do 1 damage to you. This ability is played as an interrupt.

Blood Moon

All non-basic lands are now basic mountains.

Sylvan Caryatid

Defender, hexproof {T}: Add one mana of any color to your mana pool.

Thoughtseize

Target player reveals his or her hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

Xenagos, the Reveler

+1: Add X mana in any combination of {R} and/or {G} to your mana pool, where X is the number of creatures you control. 0: Put a 2/2 red and green Satyr creature token with haste onto the battlefield. -6: Exile the top seven cards of your library. You may put any number of creature and/or land cards from among them onto the battlefield.

Purphoros, God of the Forge

Indestructible As long as your devotion to red is less than five, Purphoros isn't a creature. Whenever another creature enters the battlefield under your control, Purphoros deals 2 damage to each opponent. {2}{R}: Creatures you control get +1/+0 until end of turn.

Wall of Roots

Defender Put a -0/-1 counter on Wall of Roots: Add {G} to your mana pool. Play this ability only once each turn.

Badlands

Counts as both mountains and swamp and is affected by spells that affect either. Tap to add either {R} or {B} to your mana pool.

Bayou

Counts as both swamp and forest and is affected by spells that affect either. Tap to add either {B} or {G} to your mana pool.

Taiga

Counts as both forest and mountains and is affected by spells that affect either. Tap to add either {G} or {R} to your mana pool.

Wild Growth

When tapped, target land provides 1 green mana in addition to the mana it normally provides.

Birds of Paradise

Flying {T}: Add one mana of any color to your mana pool. This ability is played as an interrupt.

Llanowar Elves

Tap to add green mana to your mana pool. This tap can be played as an interrupt.

Pattern of Rebirth

When enchanted creature is put into a graveyard from play, that creature's controller may search his or her library for a creature card and put that card into play. If that player does, he or she then shuffles his or her library.

Grim Monolith

Grim Monolith does not untap during your untap phase. {4}: Untap Grim Monolith. {T}: Add three colorless mana to your mana pool. Play this ability as a mana source.

Priest of Titania

{T}: Add {G} to your mana pool for each Elf in play. Play this ability as a mana source.

Dark Ritual

Add {B}{B}{B} to your mana pool.

Phyrexian Tower

{T}: Add one colorless mana to your mana pool. {T}, Sacrifice a creature: Add {B}{B} to your mana pool.

Fecundity

Whenever a creature is put into a graveyard from play, that creature's controller may draw a card.

Lotus Cobra

Landfall — Whenever a land enters the battlefield under your control, you may add one mana of any color to your mana pool.

Bloodstained Mire

Marsh Flats

Misty Rainforest

Overgrown Tomb

Polluted Delta

Scalding Tarn

Verdant Catacombs

Windswept Heath

Arid Mesa

Beastmaster Ascension

Eternal Witness

Sakura-Tribe Elder

Skullclamp

Worn Powerstone

Mana Confluence

Twilight Mire

Wasteland

Emrakul, the Promised End

Chandra, Torch of Defiance

Blood Crypt

({T}: Add {B} or {R}.) As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Stomping Ground

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

Command Tower

{T}: Add one mana of any color in your commander's color identity.

Swamp

({T}: Add {B}.)

Mountain

({T}: Add {R}.)

Forest

({T}: Add {G}.)