Stream of Life

Gaea's Skyfolk

Wirewood Channeler

{T}: Add X mana of any one color, where X is the number of Elves on the battlefield.

Flash of Insight

Look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.
Flashback—{1}{U}, Exile X blue cards from your graveyard. (You may cast this card from your graveyard for its flashback cost, then exile it. You can't exile Flash of Insight to pay for its own flashback cost.)

Pemmin's Aura

Enchant creature
{U}: Untap enchanted creature.
{U}: Enchanted creature gains flying until end of turn.
{U}: Enchanted creature gains shroud until end of turn. (It can't be the target of spells or abilities.)
{1}: Enchanted creature gets +1/-1 or -1/+1 until end of turn.

Wellwisher

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

Island

Treetop Scout

This creature can't be blocked except by creatures with flying.

Wirewood Herald

When this creature dies, you may search your library for an Elf card, reveal that card, put it into your hand, then shuffle.

Forest

Volcanic Geyser

Volcanic Geyser deals X damage to any target.

Elvish Hunter

{1}{G}, {T}: Target creature doesn't untap during its controller's next untap step.

Cephalid Scout

Flying
{2}{U}, Sacrifice a land: Draw a card.

Quirion Elves

As this creature enters, choose a color.
{T}: Add {G}.
{T}: Add one mana of the chosen color.

Stroke of Genius

Magma Mine

{4}: Put a pressure counter on this artifact.
{T}, Sacrifice this artifact: It deals damage equal to the number of pressure counters on it to any target.