Have

Elvish Vanguard

Whenever another Elf enters the battlefield, put a +1/+1 counter on Elvish Vanguard.

Blue Elemental Blast

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Timberwatch Elf

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

Jaspera Sentinel

Reach
{T}, Tap an untapped creature you control: Add one mana of any color.

Tuktuk Rubblefort

Defender, reach
Creatures you control have haste.

Scattershot Archer

{T}: Scattershot Archer deals 1 damage to each creature with flying.

Nettle Sentinel

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

Valakut Invoker

{8}: Valakut Invoker deals 3 damage to any target.

Spidersilk Armor

Creatures you control get +0/+1 and have reach. (They can block creatures with flying.)

Masked Vandal

Changeling (This card is every creature type.)
When Masked Vandal enters the battlefield, you may exile a creature card from your graveyard. If you do, exile target artifact or enchantment an opponent controls.

Fyndhorn Elves

Lead the Stampede

Look at the top five cards of your library. You may reveal any number of creature cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in any order.

Birchlore Rangers

Tap two untapped Elves you control: Add one mana of any color.
Morph {G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Winding Way

Choose creature or land. Reveal the top four cards of your library. Put all cards of the chosen type revealed this way into your hand and the rest into your graveyard.

Forest

Priest of Titania

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

Wellwisher

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

Elvish Mystic

Quirion Ranger

Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

Llanowar Elves

Distant Melody

Choose a creature type. Draw a card for each permanent you control of that type.

Gleeful Sabotage

Destroy target artifact or enchantment.
Conspire (As you cast this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.)

Lys Alana Huntmaster

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

Flaring Pain

Damage can't be prevented this turn.
Flashback {R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)