Wellwisher

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

Wirewood Hivemaster

Whenever another nontoken Elf enters, you may create a 1/1 green Insect creature token.

Forest

Priest of Titania

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

Elvish Lyrist

{G}, {T}, Sacrifice Elvish Lyrist: Destroy target enchantment.

Taunting Elf

All creatures able to block Taunting Elf do so.

Wirewood Symbiote

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

Wirewood Lodge

{T}: Add {C}.
{G}, {T}: Untap target Elf.

Voice of the Woods

Tap five untapped Elves you control: Create a 7/7 green Elemental creature token with trample.

Fyndhorn Elves

Multani's Acolyte

Echo {G}{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 Multani's Acolyte enters, draw a card.