Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Jaspera Sentinel

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

Wellwisher

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

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.)

Vines of Vastwood

Kicker {G} (You may pay an additional {G} as you cast this spell.)
Target creature can't be the target of spells or abilities your opponents control this turn. If this spell was kicked, that creature gets +4/+4 until end of turn.

Priest of Titania

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

Midnight Guard

Whenever another creature enters, untap Midnight Guard.

Presence of Gond

Enchant creature
Enchanted creature has "{T}: Create a 1/1 green Elf Warrior creature token."

Quirion Ranger

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

Distant Melody

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

Elvish Mystic

Forest

Nyxborn Hydra

Bestow {X}{G}{G} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.)
Reach, trample
Nyxborn Hydra enters with X +1/+1 counters on it.
Enchanted creature gets +1/+1 for each +1/+1 counter on Nyxborn Hydra and has reach and trample.

Timberwatch Elf

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