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.

Collected Company

Look at the top six cards of your library. Put up to two creature cards with converted mana cost 3 or less from among them onto the battlefield. Put the rest on the bottom of your library in any order.

Nettle Sentinel

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

Elvish Archdruid

Other Elf creatures you control get +1/+1. {T}: Add {G} to your mana pool for each Elf you control.

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.

Dwynen's Elite

When Dwynen's Elite enters the battlefield, if you control another Elf, put a 1/1 green Elf Warrior creature token onto the battlefield.

Shaman of the Pack

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

Phyrexian Revoker

As Phyrexian Revoker enters the battlefield, name a nonland card. Activated abilities of sources with the chosen name can't be activated.

Burrenton Forge-Tender

Protection from red Sacrifice Burrenton Forge-Tender: Prevent all damage a red source of your choice would deal this turn.

Heritage Druid

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

Melira, Sylvok Outcast

You can't get poison counters. Creatures you control can't have -1/-1 counters placed on them. Creatures your opponents control lose infect.

Spellskite

{U/P}: Change a target of target spell or ability to Spellskite. ({U/P} can be paid with either {U} or 2 life.)

Yixlid Jailer

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Elvish Mystic

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

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.

Kataki, War's Wage

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {1}."

Ezuri, Renegade Leader

{G}: Regenerate another target Elf. {2}{G}{G}{G}: Elf creatures you control get +3/+3 and gain trample until end of turn.

Razorverge Thicket

Razorverge Thicket enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {G} or {W} to your mana pool.

Fracturing Gust

Destroy all artifacts and enchantments. You gain 2 life for each permanent destroyed this way.

Kitchen Finks

When Kitchen Finks comes into play, you gain 2 life. Persist (When this creature is put into a graveyard from play, if it had no -1/-1 counters on it, return it to play under its owner's control with a -1/-1 counter on it.)

Elvish Champion

Other Elf creatures get +1/+1 and have forestwalk. (They're unblockable as long as defending player controls a Forest.)

Pendelhaven

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

Llanowar Elves

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

Path to Exile

Exile target creature. Its controller may search his or her library for a basic land card, put that card onto the battlefield tapped, then shuffle his or her library.

Elvish Visionary

Eternal Witness

Horizon Canopy

Selfless Spirit

Aven Mindcensor

Forest

({T}: Add {G}.)