I've got a decent Elf Combo deck going. Mostly it's based around a few cards.

It's been updated with some of the new cards in WWK.

First off make lots of tokens.

[[Imperious Perfect]] [[Lys Alana Huntmaster]]

You'll need mana, and a bit of life gain, they're also small so you can cast them early.

[[Llanowar Elves]] [[Elvish Eulogist]]

A new Worldwake card that is really good here. And you'll want lots of manny for it.

[[Joraga Warcaller]] [[Elvish Archdruid]]

You can get the idea from this. If you want to splash Black there's some nice elves in the Lorwyn block that you can use. Such as...

[[Moonglove Winnower]] [[Eyeblight's Ending]]

I usually play Extended so I get some nice ideas going.

The best deck in extended is darkfoundry darkdepths and thopter foundy combo. The deck is insane, I went to a PTQ like 2 monthes ago and went 8-1 with it with one loss to tribal zoo because he got 3 tribal flames, and 15 to the head is kinda a problem.

But yeah darkfoundry is just insane.

The ones I would point out include the aforementioned Dark Depths, Combo Elves (focusing on elfelfelfelfelfelfelfGRAPESHOT), Thopterator (also known as Tezzerator), Scapeshift (Valakut win condition of course), and repeatable Martyr of the Sands. Hypergenesis is there too, but it gets boring fast (either you hit a cascade or you don't...)

My personal favorite combo deck is a Valakut/Scapeshift variation that forces your opponent to gain life in order to grow creatures and repeat direct damage:

4X:

• [[[Bloodbraid Elf]]]
• [[[Kitchen Finks]]]
• [[[Sakura-Tribe Elder]]]
• [[[Wood Elves]]]
• [[[Kavu Predator]]]
• [[[Ball Lightning]]]
• [[[Punishing Fire]]]
• [[[Harmonize]]]
• [[[Scapeshift]]]
• [[[Grove of the Burnwillows]]]
• [[[Stomping Ground]]]

2X:

• [[[Oran-Rief the Vastwood]]]
• [[[Valakut, the Molten Pinnacle]]]

5X [[[Forest]]]

7X [[[Mountain]]]

Sideboard (3X):

• [[[Great Sable Stag]]]
• [[[Ancient Grudge]]]
• [[[Search for Tomorrow]]]
• [[[Dragon's Claw]]]
• [[[Tormod's Crypt]]]

Unfortunately, this deck has nothing to stop a Dark Depths combo aside from mana acceleration and direct damage with a scapeshift (Kitchen Finks can give an extra turn to do this). On the other hand, the sideboard provides anti-blue and anti-black, and reduces the viability of tarmogoyf. As an added advantage, this deck has sanctions against your opponent's life gain, potentially stopping thopterator decks and martyr of the sands combo decks.

This one will soon be in the spotlight I bet.

[[Izzet Guildmage]][[Manamorphose]][[Training Grounds]]

Would you like to fight my entire library? Because I'm not sure whether to play it or not.

This is one of those "gotta see the look on their face when they realize" decks...

Wizards really should have reconsidered printing a card better than [[[Power Artifact]]]

Undoubtedly, the deck will feature card fishing like [[[ponder]]] or [[[gifts ungiven]]] and red/blue double lands.

UPDATE: I've constructed a deck based on this, as you can see here.

And of course you can do this on turn one:

[[Rite of Flame]]