Voron

Throw out Lotus Cobra for Harabaz Druid. The Druid can make mana redicilous fast! And in this kind of deck, a clone might be better then a Jwari Shapeshifter, I think

Where is Harabaz Druid and maybe a Rite of Replication?

Harabaz make all the mana you need for a kicked rite for Turntimber. End game :)

Tried Hivestone?

Damn... a lot of comments, but nobody's talking about "Muraganda Petroglyphs"? *sigh* just add it, you'll thank me later.

One thing first, drop the Black Lotus, putting 1000dollar cards in your deck isn't a good way to be taken serious (unless you're making a joke deck)

And second, I like your deck :D Here check out my deck, you might get some idea's:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=148692

Drop 20...

Drop Grozoth, there are better options then him. And add Preordrain instead of Brainstorm. Brainstorm is a nice card, but not together with Ula's Temple. Maybe also add some low mana creatures, just in case. Augury Owl is a really good option!

Imo opinion you had a lot of mana-elves (elf) and then insta-killing your enemy with a fireball (ball). :P Using a lot of mana-elves to get out eldrazi, is called Elfdrazi if I'm right?

I think I'm missing 2 crucial wizzards, don't remember their names though:
-Tap a wizard, draw a (two?) cards.
-Sacrifice a wizard, counter target spell
-Whenever you counter a spell, put a 1/1 wizard token into play

Don't you need Fireball, to have an elfball deck?

Fun? Try adding Curiosity, that's what I call a fun Niv-Mizzet deck :)

Birthing Pod + Mimic Vat :)

Nice go at a G/B fungus deck! Here check out my U/G version. You might get some idea's:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=143471

Ravnia & Infinite combo's?
-Izzet Guildmage + Lavaspike + Desperate Ritual
-Niv-Mizzet + Curiosity
To name the 2 best imo. :)

Here is a link to my Gold deck btw, you might get some idea's:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=102865

-Birthing Pod
-Hunted Phantasm
-Hunted Troll
-Hunted Dragon
-Massacre Wurm

21 damage :)

So only Batterskull and Precursor Golem are your Shape Anew targets? I would recommend adding a Blightsteel Collosus

Don't you know it's better to be vegetarian!
http://www.mtgvault.com/ViewDeck.aspx?DeckID=108212

Darien is too expensive in a Soldier deck unless you make a deck dedicated to him. So take him out

And you better start looking around for some Kithkin Soldiers, because they have a lot of support cards you could really use!
Here is an example of my own soldier deck, you might get some idea's:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=148692

http://www.mtgvault.com/ViewDeck.aspx?DeckID=154154
That's mine B/W Knight deck, you might get some idea's to improve your own! :)

Nice deck dude!