Nettle Sentinel

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

Island

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 the battlefield unattached and stays on the battlefield if the creature leaves.)

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.

Essence Warden

Whenever another creature enters the battlefield, you gain 1 life.

Timberwatch Elf

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

Sylvan Ranger

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

Elvish Mystic

Fyndhorn Elves

Lys Alana Huntmaster

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

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.)

Forest

Wellwisher

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

Distant Melody

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

Llanowar Elves

Ponder

Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.

Priest of Titania

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

Quirion Ranger

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