So, I've see a number of combo elf decks that use Regal Force, Glimpse of Nature, Genesis Wave, Craterhoof Behemoth, and Beck // Call. I wanted to go a different route.

Lands
2 Nykthos, Shrine to Nyx
4 Cavern of Souls
12 Forest

Mana Creatures
3 Elvish Archdruid
4 Llanowar Elves
2 Elvish Mystic

Infinite Mana Engine
4 Nettle Sentinel
3 Heritage Druid
4 Cloudstone Curio

Tutor
3 Elvish Harbinger

Creature Acceleration
4 Elvish Visionary
2 Abundance

Token Generation
2 Wren's Run Packmaster
2 Lys Alana Huntmaster

Life Gain
2 Essence Warden

Creature Pumping
2 Joraga Warcaller

Other
1 Nylea, God of the Hunt
2 Elixir of Immortality
1 Helix Pinnacle
1 Eladamri, Lord of Leaves

Sideboard
Nullmage Shepherd
Gravity Well
Spreading Algae
Tajuru Preserver
Grafdigger's Cage

This deck works around being versatile and requiring no specific combo to win, as a result, I've found it SUPER reliable. obviously this deck revolves around Cloudstone Curio to do multiple combos a turn (or infinite combos if you have Heritage Druid out). The nice thing is this takes advantage of the variety of elf abilities to make everything combo. There are two main groups of win condition combos, mana sink combos and comes into play combos.

Mana Sink Combos
1 Cloudstone Curio + 1 Nettle Sentinel + 1 Heritage Druid + any 2 mana elves + Wren's Run Packmaster = infinite 2/2 deathtouch wolf tokens
1 Cloudstone Curio + 1 Nettle Sentinel + 1 Heritage Druid + any 2 mana elves + Helix Pinnacle = straight out win
1 Cloudstone Curio + 1 Nettle Sentinel + 1 Heritage Druid + any 2 mana elves + Joraga Warcaller = Elves get +∞/+∞

Comes into Play Combos
1 Cloudstone Curio + 1 Heritage Druid + any two mana elves + 1 Lys Alana Huntmaster = infinite 1/1 elf tokens
1 Cloudstone Curio + 1 Heritage Druid + any two mana elves + 1 Essence Warden = infinite life gain

There's also ways to infinite play Elvish Visionary and draw as many cards as you like. In fact, she can basically replace Genesis Wave, Beck // Call, and Glimpse of Nature.

The nice thing is heritage druid isn't actually necessary for the deck to go off.
Elvish Visionary + Lys Alana Huntmaster + Cloudstone Curio is just scary by itself. You play Visionary which triggers the Huntmaster which causes the Curio to bounce Visionary back into hand. You can easily play her 4+ times a round and get as many 1/1 elves. Throw an Archdruid on the field and I've played her as much as 11 times before I drew into a Heritage Druid and triggered a win condition. Also, Wren's Run Packmaster is great if there isn't a Curio out because she works well with the mana gen of this deck and it's very realistic to be putting out 2-6 2/2 wolves with deathtouch a turn if you have nothing better to play.

The other nice thing that isn't obvious is this deck is brutal against field wipes. Use Wren's Run Packmaster to champion an Elvish Harbinger and when they wipe field the Harbringer returns to play, letting you search your deck for an Elvish Visionary. Combine that with an Elixir of Immortality and it's possible to go into an infinite combo the very turn after they wipe.

Joraga Warcaller also proves to be superior to Craterhoof Behemoth because there's no fear of playing him early game kicked once or twice when you can just bounce him back later for a much higher bonus.

Also worth noting, Cloudstone Curio doesn't target so there's no interference by Eladamri, Lord of Leaves.

Thoughts?