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.

Craterhoof Behemoth

Haste When Craterhoof Behemoth enters the battlefield, creatures you control gain trample and get +X/+X until end of turn, where X is the number of creatures you control.

Glimpse of Nature

Whenever you play a creature spell this turn, draw a card.

Thalia, Guardian of Thraben

First strike Noncreature spells cost {1} more to cast.

Nettle Sentinel

Nettle Sentinel doesn't untap during your untap step. Whenever you play a green spell, you may untap Nettle Sentinel.

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.

Gaddock Teeg

Noncreature spells with converted mana cost 4 or greater can't be played. Noncreature spells with {X} in their mana costs can't be played.

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.

Shaman of the Pack

When Shaman of the Pack enters the battlefield, target opponent loses life equal to the number of Elves you control.

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.

Heritage Druid

Tap three untapped Elves you control: Add {G}{G}{G} to your mana pool.

Surgical Extraction

({B/P} can be paid with either {B} or 2 life.) Choose target card in a graveyard other than a basic land card. Search its owner's graveyard, hand, and library for any number of cards with the same name as that card and exile them. Then that player shuffles his or her library.

Birchlore Rangers

Tap two untapped Elves you control: Add one mana of any color to your mana pool. Morph {G} (You may play this face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Cabal Therapy

Name a nonland card. Target player reveals his or her hand and discards all cards with that name. Flashback-Sacrifice a creature. (You may play this card from your graveyard for its flashback cost. Then remove it from the game.)

Wren's Run Packmaster

Champion an Elf (When this comes into play, sacrifice it unless you remove another Elf you control from the game. When this leaves play, that card returns to play.) {2}{G}: Put a 2/2 green Wolf creature token into play. Each Wolf you control has deathtouch. (When it deals damage to a creature, destroy that creature.)

Karakas

{T}: Add {W} to your mana pool. {T}: Return target legendary creature to its owner's hand.

Sylvan Library

You may draw two extra cards during your draw phase. If you do so, put two of the cards drawn this turn back on top of your library (in any order) or pay 4 life per card not replaced. Effects that prevent or redirect damage cannot be used to counter this loss of life.

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.

Wirewood Symbiote

Return an Elf you control to its owner's hand: Untap target creature. Play this ability only once each turn.

Pithing Needle

As Pithing Needle comes into play, name a card. Activated abilities of sources with the chosen name can't be played unless they're mana abilities.

Thoughtseize

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

Pendelhaven

{T}: Add {G} to your mana pool. {T}: Target 1/1 creature gets +1/+2 until end of turn.

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.

Savannah

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

Llanowar Elves

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

Crop Rotation

At the time you play Crop Rotation, sacrifice a land. Search your library for a land card and put that land into play. Shuffle your library afterwards.

Gaea's Cradle

{T}: Add {G} to your mana pool for each creature you control.

Quirion Ranger

Return a forest you control to owner's hand: Untap target creature. Use this ability only once each turn.

Null Rod

Players cannot play any artifact abilities requiring an activation cost.

Wooded Foothills

Elvish Visionary

Forest

({T}: Add {G}.)