Wellwisher

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

Viridian Longbow

Equipped creature has "{T}: This creature deals 1 damage to any target."
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery. This card enters unattached and stays on the battlefield if the creature leaves.)

Kaervek's Torch

As long as Kaervek's Torch is on the stack, spells that target it cost {2} more to cast.
Kaervek's Torch deals X damage to any target.

Spidersilk Armor

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

Llanowar Elves

Sylvan Ranger

When Sylvan Ranger enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Timberwatch Elf

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

Elvish Visionary

When Elvish Visionary enters, draw a card.

Distant Melody

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

Arbor Elf

Mob Justice

Mob Justice deals damage to target player or planeswalker equal to the number of creatures you control.

Envelop

Vitalize

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.)

Elvish Mystic

Nettle Sentinel

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

Essence Warden

Whenever another creature enters, you gain 1 life.

Priest of Titania

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

Lys Alana Huntmaster

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

Island

Fade into Antiquity

Taunting Elf

All creatures able to block Taunting Elf do so.

Forest

Mountain

Quirion Ranger

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