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.

Toxic Deluge

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

Titania, Protector of Argoth

When Titania, Protector of Argoth enters the battlefield, return target land card from your graveyard to the battlefield. Whenever a land you control is put into a graveyard from the battlefield, put a 5/3 green Elemental creature token onto the battlefield.

Sidisi, Undead Vizier

Deathtouch Exploit (When this creature enters the battlefield, you may sacrifice a creature.) When Sidisi, Undead Vizier exploits a creature, you may search your library for a card, put it into your hand, then shuffle your library.

Recurring Nightmare

Sacrifice a creature, Return Recurring Nightmare to owner's hand: Put target creature card from your graveyard into play. Play this ability as a sorcery.

Merciless Executioner

When Merciless Executioner enters the battlefield, each player sacrifices a creature.

Augur of Skulls

{1}{B}: Regenerate Augur of Skulls. Sacrifice Augur of Skulls: Target player discards two cards. Play this ability only during your upkeep.

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.

Sylvan Primordial

Reach When Sylvan Primordial enters the battlefield, for each opponent, destroy target noncreature permanent that player controls. For each permanent destroyed this way, search your library for a Forest card and put that card onto the battlefield tapped. Then shuffle your library.

Fyndhorn Elves

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

Liliana of the Veil

+1: Each player discards a card. -2: Target player sacrifices a creature. -6: Separate all permanents target player controls into two piles. That player sacrifices all permanents in the pile of his or her choice.

Woodland Cemetery

Woodland Cemetery enters the battlefield tapped unless you control a Swamp or a Forest. {T}: Add {B} or {G} to your mana pool.

Fauna Shaman

{G}, {T}, Discard a creature card: Search your library for a creature card, reveal it, and put it into your hand. Then shuffle your library.

Viscera Seer

Sacrifice a creature: Scry 1. (To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.)

Thragtusk

When Thragtusk enters the battlefield, you gain 5 life. When Thragtusk leaves the battlefield, put a 3/3 green Beast creature token onto the battlefield.

Scavenging Ooze

{G}: Exile target card from a graveyard. If it was a creature card, put a +1/+1 counter on Scavenging Ooze and you gain 1 life.

Reclamation Sage

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

Caustic Caterpillar

{1}{G}, Sacrifice Caustic Caterpillar: Destroy target artifact or enchantment.

Duplicant

Imprint — When Duplicant comes into play, you may remove target nontoken creature from the game. (The removed card is imprinted on this artifact.) As long as a creature card is imprinted on Duplicant, Duplicant has that card's power, toughness, and creature types. It's still a Shapeshifter.

Green Sun's Zenith

Search your library for a green creature card with converted mana cost X or less, put it onto the battlefield, then shuffle your library. Shuffle Green Sun's Zenith into its owner's library.

Birthing Pod

({G/P} can be paid with either {G} or 2 life.) {1}{G/P}, {T}, Sacrifice a creature: Search your library for a creature card with converted mana cost equal to 1 plus the sacrificed creature's converted mana cost, put that card onto the battlefield, then shuffle your library. Activate this ability only any time you could cast a sorcery.

Imperial Seal

Search your library for any one card. Shuffle your library and put that card on top of it. You lose 2 life.

Damnation

Chrome Mox

Imprint — When Chrome Mox enters the battlefield, you may exile a nonartifact, nonland card from your hand. {T}: Add one mana of any of the exiled card's colors to your mana pool.

Sheoldred, Whispering One

Swampwalk At the beginning of your upkeep, return target creature card from your graveyard to the battlefield. At the beginning of each opponent's upkeep, that player sacrifices a creature.

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.

Life from the Loam

Return up to three target land cards from your graveyard to your hand. Dredge 3 (If you would draw a card, instead you may put exactly three cards from the top of your library into your graveyard. If you do, return this card from your graveyard to your hand. Otherwise, draw a card.)

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.

Joraga Treespeaker

Level up {1}{G} ({1}{G}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-4 1/2 {T}: Add {G}{G} to your mana pool. LEVEL 5+ 1/4 Elves you control have "{T}: Add {G}{G} to your mana pool."

Fume Spitter

Sacrifice Fume Spitter: Put a -1/-1 counter on target creature.

Carrion Feeder

Carrion Feeder can't block. Sacrifice a creature: Put a +1/+1 counter on Carrion Feeder.

Devoted Druid

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

Fleshbag Marauder

When Fleshbag Marauder enters the battlefield, each player sacrifices a creature.

Mox Diamond

When Mox Diamond comes into play, choose and discard a land card or sacrifice Mox Diamond. {T}: Add one mana of any color to your mana pool. Play this ability as a mana source.

Volrath's Stronghold

{T}: Add one colorless mana to your mana pool. {1}{B}, {T}: Put target creature card from your graveyard on top of your library.

Crucible of Worlds

You may play land cards from your graveyard.

Llanowar Wastes

{T}: Add {1} to your mana pool. {T}: Add {B} or {G} to your mana pool. Llanowar Wastes 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.

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.

Chainer's Edict

Target player sacrifices a creature. Flashback {5}{B}{B} (You may play this card from your graveyard for its flashback cost. Then remove it from the game.)

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.

Birds of Paradise

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

Animate Dead

Any creature in either player's graveyard comes into play on your side with -1 to its original power. If this enchantment is removed, or at end of game, target creature is returned to its owner's graveyard. Target creature may be killed as normal.

Llanowar Elves

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

Demonic Tutor

You may search your library for one card and take it into your hand. Reshuffle your library afterwards.

Phyrexian Tower

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

Exploration

You may play an additional land each turn.

Vampiric Tutor

Pay 2 life: Search your library for any one card. Shuffle your library, then put that card on top of your library.

Oracle of Mul Daya

You may play an additional land on each of your turns. Play with the top card of your library revealed. You may play the top card of your library if it's a land card.

Bloodstained Mire

Marsh Flats

Misty Rainforest

Overgrown Tomb

Polluted Delta

Verdant Catacombs

Windswept Heath

Wooded Foothills

Acidic Slime

Eternal Witness

Golgari Rot Farm

Lotleth Troll

Meren of Clan Nel Toth

Sakura-Tribe Elder

Shriekmaw

Skullclamp

Solemn Simulacrum

Temple of the False God

Victimize

Wood Elves

Hissing Quagmire

Ancient Tomb

Twilight Mire

Wasteland

Eldritch Evolution

Blooming Marsh

Gonti, Lord of Luxury

Fatal Push

Manglehorn

Prowling Serpopard

Ramunap Excavator

Temple of Malady

Temple of Malady enters the battlefield tapped. When Temple of Malady enters the battlefield, scry 1. {T}: Add {B} or {G}.

Command Tower

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

Swamp

({T}: Add {B}.)

Forest

({T}: Add {G}.)