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.

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.

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.)

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.

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.

Tropical Island

Counts as both forest and islands and is affected by spells that affect either. Tap to add either {G} or {U} 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.

Null Rod

Players cannot play any artifact abilities requiring an activation cost.

Misty Rainforest

Verdant Catacombs

Elvish Visionary

Nissa, Vital Force

Forest

({T}: Add {G}.)