Thornbow Archer

Whenever this creature attacks, each opponent who doesn't control an Elf loses 1 life.

Shaman of the Pack

When this creature enters, target opponent loses life equal to the number of Elves you control.

Llanowar Elves

Reclamation Sage

When this creature enters, you may destroy target artifact or enchantment.

Forest

Elvish Promenade

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

Arbor Elf

Unclaimed Territory

As this land enters, choose a creature type.
{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

Elvish Archdruid

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

Elvish Mystic

Gilt-Leaf Palace

As this land enters, you may reveal an Elf card from your hand. If you don't, this land enters tapped.
{T}: Add {B} or {G}.

Dwynen's Elite

When this creature enters, if you control another Elf, create a 1/1 green Elf Warrior creature token.

Elvish Visionary

Elvish Warmaster

Whenever one or more other Elves you control enter, create a 1/1 green Elf Warrior creature token. This ability triggers only once each turn.
{5}{G}{G}: Elves you control get +2/+2 and gain deathtouch until end of turn.

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.