Getting

Beast Within

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Copperhorn Scout

Whenever this creature attacks, untap each other creature you control.

Llanowar Elves

Gaea's Anthem

Proxy

Elvish Spirit Guide

Exile this creature from your hand: Add {G}.

Don't Have

Elvish Scrapper

{G}, {T}, Sacrifice this creature: Destroy target artifact.

Kaysa

Sylvan Messenger

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
When this creature enters, reveal the top four cards of your library. Put all Elf cards revealed this way into your hand and the rest on the bottom of your library in any order.

Elvish Lyrist

{G}, {T}, Sacrifice this creature: Destroy target enchantment.

Viridian Joiner

{T}: Add an amount of {G} equal to this creature's power.

Defiant Elf

Elf Warrior

Skyshroud Elite

This creature gets +1/+2 as long as an opponent controls a nonbasic land.

Beast

Glissa Sunseeker

First strike
{T}: Destroy target artifact if its mana value is equal to the amount of unspent mana you have.

Heart Warden

{T}: Add {G}.
{2}, Sacrifice this creature: Draw a card.

Essence Warden

Whenever another creature enters, you gain 1 life.

Elvish Promenade

Create a 1/1 green Elf Warrior creature token for each Elf you control.

Eladamri, Lord of Leaves

Other Elf creatures have forestwalk. (They can't be blocked as long as defending player controls a Forest.)
Other Elves have shroud. (They can't be the targets of spells or abilities.)

Wren's Run Vanquisher

As an additional cost to cast this spell, reveal an Elf card from your hand or pay {3}.
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Elvish Harbinger

When this creature enters, you may search your library for an Elf card, reveal it, then shuffle and put that card on top.
{T}: Add one mana of any color.

Elvish Champion

Other Elf creatures get +1/+1 and have forestwalk. (They can't be blocked as long as defending player controls a Forest.)

Nature's Claim

Destroy target artifact or enchantment. Its controller gains 4 life.

Heedless One

Trample
Heedless One's power and toughness are each equal to the number of Elves on the battlefield.

Harmonize

Jagged-Scar Archers

Jagged-Scar Archers's power and toughness are each equal to the number of Elves you control.
{T}: This creature deals damage equal to its power to target creature with flying.

Drove of Elves

Hexproof
Drove of Elves's power and toughness are each equal to the number of green permanents you control.

Fyndhorn Elder

Lys Alana Huntmaster

Whenever you cast an Elf spell, you may create a 1/1 green Elf Warrior creature token.

Have

Priest of Titania

{T}: Add {G} for each Elf on the battlefield.

Glistener Elf

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Wellwisher

{T}: You gain 1 life for each Elf on the battlefield.

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.

Elvish Pioneer

When this creature enters, you may put a basic land card from your hand onto the battlefield tapped.

Joraga Warcaller

Multikicker {1}{G} (You may pay an additional {1}{G} any number of times as you cast this spell.)
This creature enters with a +1/+1 counter on it for each time it was kicked.
Other Elf creatures you control get +1/+1 for each +1/+1 counter on this creature.

Noxious Revival

({G/P} can be paid with either {G} or 2 life.)
Put target card from a graveyard on top of its owner's library.

Gaea's Herald

Elvish Archdruid

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

Bramblewood Paragon

Each other Warrior creature you control enters with an additional +1/+1 counter on it.
Each creature you control with a +1/+1 counter on it has trample.

Wirewood Channeler

{T}: Add X mana of any one color, where X is the number of Elves on the battlefield.

Talara's Battalion

Cast this spell only if you've cast another green spell this turn.
Trample

Treetop Scout

This creature can't be blocked except by creatures with flying.

Boreal Druid

Prevent all combat damage that would be dealt this turn.

Wood Elves

When this creature enters, search your library for a Forest card, put that card onto the battlefield, then shuffle.

Overrun

Creatures you control get +3/+3 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)

Skyshroud Ranger

{T}: You may put a land card from your hand onto the battlefield. Activate only as a sorcery.

Farhaven Elf

When this creature enters, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Imperious Perfect

Other Elves you control get +1/+1.
{G}, {T}: Create a 1/1 green Elf Warrior creature token.

Arbor Elf

Elvish Vanguard

Whenever another Elf enters, put a +1/+1 counter on this creature.

Gilt-Leaf Archdruid

Whenever you cast a Druid spell, you may draw a card.
Tap seven untapped Druids you control: Gain control of all lands target player controls.

Heritage Druid

Tap three untapped Elves you control: Add {G}{G}{G}.

Elvish Lookout

Shroud (This creature can't be the target of spells or abilities.)

Devoted Druid

{T}: Add {G}.
Put a -1/-1 counter on this creature: Untap this creature.

Collective Unconscious

Draw a card for each creature you control.

Forest

Fyndhorn Elves

Timberwatch Elf

{T}: Target creature gets +X/+X until end of turn, where X is the number of Elves on the battlefield.

Titania's Chosen

Whenever a player casts a green spell, put a +1/+1 counter on this creature.

Gilt-Leaf Ambush

Create two 1/1 green Elf Warrior creature tokens. Clash with an opponent. If you win, those creatures gain deathtouch until end of turn. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value. Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.)

Lys Alana Bowmaster

Reach
Whenever you cast an Elf spell, you may have this creature deal 2 damage to target creature with flying.

Yavimaya Granger

Echo {2}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Willow Elf

Gaea's Cradle

{T}: Add {G} for each creature you control.

Wrap in Vigor

Sylvan Library

At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.

Tangle

Prevent all combat damage that would be dealt this turn.
Each attacking creature doesn't untap during its controller's next untap step.