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.

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.

Fyndhorn Elves

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

Elderscale Wurm

Trample When Elderscale Wurm enters the battlefield, if your life total is less than 7, your life total becomes 7. As long as you have 7 or more life, damage that would reduce your life total to less than 7 reduces it to 7 instead.

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.

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.)

Elvish Mystic

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

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.

Wirewood Symbiote

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

Faerie Macabre

Flying Discard Faerie Macabre: Remove up to two target cards in graveyards from the game.

Choke

Islands do not untap during their controllers' untap phases.

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.

Llanowar Elves

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

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.

Natural Order

Sacrifice a green creature: Search your library for a green creature card and put it into play as though it were just played. Snuffle your library afterwards.

Misty Rainforest

Verdant Catacombs

Windswept Heath

Elvish Visionary

Forest

({T}: Add {G}.)