Elves is one of the most unique decks in Legacy. While there aren't many cards in Elves that appear in other decks in Legacy, don't mistake that for a lack of power.
Gaea's Cradle is one of the most powerful lands in Legacy, worth playing the full four copies despite its legendary status and the fact that it can't produce mana on the first turn.
This deck has a multitude of synergies layered within the Elf tribe. Heritage Druid plus Nettle Sentinel allows you to produce tons of mana, while Glimpse of Nature allows you to draw more Elves as you cast more Elves. Wirewood Symbiote protects your creatures from opposing removal while letting you return Elvish Visionary as a secondary draw engine.
Natural Order has lots of functions in this deck, providing a finisher in Craterhoof Behemoth or a nearly unstoppable creature in Progenitus.

http://magic.wizards.com/en/articles/archive/magic-digital/legacy-gauntlet-2016-06-01