You have 4 individual cards that are white... Why are you running 16 plains? Cut twelve, play a full playset of all the Urza lands. You're already out of Modern with your deck, so why not make it worthwhile? Urza's Tower, Urza's Power Plant and Urza's Mine would work great here, plus they're relatively cheap.
Also, why are you even running white? The only reason it seems reasonable is if you want to regenerate your creatures and considering you're playing Eldrazi, you couldn't care less if they die, another one comes right after. The ones that matter even have indestructible. Get some stronger artifacts to back them up instead.
Other than that... Run more draw mechanics, not a lot, but some. If you finally get the mana you need to throw out the eldrazis, you're going to want to draw more of them and run through your other cards, fast.
November 5, 2015 7:07 p.m.
A lot of people aren't going to want to play against 4x Sol Rings. 1 is probably okay. Since you're playing with Tron, I'd replace 3 of them with Expedition Maps, and then swap out one of the more expensive mana producers (Thran Dynamo et al) for the fourth copy.
November 7, 2015 4:12 p.m.
Sorry for the double post, but I just realized you don't have Eldrazi Temples in a deck with nothing but Eldrazi cards. I'd probably add four, cut a single Mage-Ring Network (going to 25 lands), and drop down on your expensive duplicates.
To sum up my posts:
November 7, 2015 4:16 p.m.
thank you @sylvannos, didn't know about that Eldrazi Temple I only play with like 3-5 different people and they all have crazy super illegal decks and don't care if I run 4 sol rings lol. but, I did put those temples in there. Also, i have a modern legal version of this deck. in my deck list if you wanna check it out.
November 7, 2015 4:46 p.m.
A carddraw engine would be nice when ramping is really kickin' in. Sensei's Divining Top is a viable option, one or two.
- 1 from me.
November 8, 2015 4:48 p.m.
This deck is REALLY illegal anyway, so why not play Emrakul, the Aeons Torn?
November 23, 2015 10:30 p.m.
What about Cloudpost, Glimmerpost, and Thespian's Stage? That can generate mana fast and it doesn't matter that it's colorless, since all the Eldrazi are. You need more card draw for sure. Kozilek, the Great Distortion would be nice for that. You don't have any real board presence until turn 4-5 (or am I missing something?). Are you staying alive that long? Maybe find a couple one or two drops or add a Tomb of the Spirit Dragon to help recover from all that early life-loss.