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.

Orzhov Pontiff

Haunt (When this card is put into a graveyard from play, remove it from the game haunting target creature.) When Orzhov Pontiff comes into play or the creature it haunts is put into a graveyard, choose one — creatures you control get +1/+1 until end of turn; or creatures you don't control get -1/-1 until end of turn.

Gilt-Leaf Palace

As Gilt-Leaf Palace comes into play, you may reveal an Elf card from your hand. If you don't, Gilt-Leaf Palace comes into play tapped. {T}: Add {B} or {G} to your mana pool.

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.

Burrenton Forge-Tender

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

Mirror Entity

Changeling (This card is every creature type at all times.) {X}: Until end of turn, creatures you control have base power and toughness X/X and gain all creature types.

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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Dismember

({B/P} can be paid with either {B} or 2 life.) Target creature gets -5/-5 until end of turn.

Sin Collector

When Sin Collector enters the battlefield, target opponent reveals his or her hand. You choose an instant or sorcery card from it and exile that card.

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.

Elvish Champion

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

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.

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.

Kor Firewalker

Protection from red Whenever a player casts a red spell, you may gain 1 life.

Temple Garden

Chameleon Colossus

Elvish Visionary

Horizon Canopy

Eldritch Evolution

Selfless Spirit

Forest

({T}: Add {G}.)