Elder Druid

{3}{G}, {T}: You may tap or untap target artifact, creature, or land.

Gaea's Herald

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

Skyshroud Elite gets +1/+2 as long as an opponent controls a nonbasic land.

{G}, {T}: You may put a creature card from your hand onto the battlefield.

{G}, {T}, Sacrifice Elvish Scrapper: Destroy target artifact.

When Wood Elves enters, search your library for a Forest card, put that card onto the battlefield, then shuffle.

Elven Riders can't be blocked except by Walls and/or creatures with flying.

All creatures able to block Elvish Bard do so.

Reach (This creature can block creatures with flying.)

Whenever Elvish Berserker becomes blocked, it gets +1/+1 until end of turn for each creature blocking it.

When Elvish Pioneer enters, you may put a basic land card from your hand onto the battlefield tapped.

Metalcraft — Etched Champion has protection from each color as long as you control three or more artifacts.