I would add in the Urza lands: Urza's Tower + Urza's Mine + Urza's Power Plant.

Thanks for the reply Jhereg2467. I didn't use them because I found them too unreliable, besides that they don't allow for the green to power the elves. I did use them in this version Eldrazi basic but that's where I found them to be unreliable

How do you "let one[Emrakul] die"?

It's awesome! +1

Emracool_the_Aeons_Torn it's the legendary rule... when there are 2 of the same legendary card on your side of the field you pick one to die.

Cool deck, you might want to add and Omnath, Locus of Mana to help with the ramp.

Now that's an interesting card only question is where to put it....

put Tajuru Preserver in the sideboard, take out an All Is Dust from your sideboard. All is dust is a good card it is just that it puts an end to your eldrazi casting because it destroys all of your elves. That will make room to mainboard 1 Omnath, Locus of Mana. Tajuru Preserver is more of a sideboard card, only to mainboard against sacrifice decks. Sacrifice decks aren't very common in most meta's so you might want to consider removing that card from your deck as a whole.

Thanks horatio13 I'm also considering Collected Company in place of Harmonize

you have 21 creature spells with CMC 3 or under, that is a tiny bit more than 1/3 your deck, revealing the top six cards with Collected Company you will get 1/3 of 6 creature spells with cmc 3 or under which is 2. That is the maximum Collected Company can put onto the battlefield. So if you play collected company and your deck is perfectly shuffled you will get 2 creatures on the battlefield. Now compare that with Harmonize. Harmonize draws 3 cards, Collected Company puts 2 cards from your library onto the battlefield. I would swap out 3 Harmonizes for 3 Collected Company's.

I ran some play tests and I'm thinking that splitting the difference at 2 Collected Company and 2 Harmonize is the way to go.

Priest of Titania and Voyaging Satyr will help with mana. Use Commune with Nature for digging for your fatties since CoCo won't help.

Grantley91 I wish I could use the Priest of Titania unfortunately she isn't modern legal :( I will def look into Commune with Nature as an option

Yeah I guess I didn't even check your deck or the card for legality... My bad lol. But yeah, the satyr should help too, especially if you use it with Nykthos.

Sweet deck +1, mabey you could fit Worldspine Wurm in here?

I would love to use the Worldspine Wurm he looks like so much fun! I would also love to use Panglacial Wurm due to the amount of search but that one is more for the Lolz! Any suggestions where Worldspine Wurm could fit? Or maby he would be a good sideboard card.... hmmmmm

Honestly I would put it in place of 1x Emrakul, the Aeons Torn since you don't want to draw into 2 of them.

It's an idea I'll have to play test!

Again, awesome deck! +1 And thanks for all the good suggestions.

I've posted an update and would like opinions!

Very nice. +1

How long does it take for you to get Emrakul or Kozilek out, considering all of your mana ramp?

bdb20 usually Ulamog, the Infinite Gyre Or Kozilek, Butcher of Truth can come down as early as turn 4 with Emrakul, the Aeons Torn Turn 6 or 7 depending on elves I've gotten/number of Primeval Titans I've gotten

Good deck, definitely a different twist on elves! The Eldrazi make this deck crazy scary. I like it! I think that it may be a little bit slow, and things like Collected Company could be taken out for something like Genesis Wave in this rare case because if you're using an infinite mana combo, 3 G-Wave over 3 CoCo would be a butt ton more effective.

Sorry, I apologize, not an infinite mana combo, however a combo that does an instantaneous win (basically), having Genesis Wave wouldn't be terrible to dumb some big guys out on the board. Especially when a few of the things in your deck are not 3 CMC or less.

Now here's a cool twist on elves. I like it!