I see you have Rapid Hybridization, why no Pongify or Reality Shift?

Slots in the deck are already pretty locked between ramp, finishers, and value cards. I don't really feel like the listed cards (as great as they are) can replace my other choices on the list without interfering in some way. When playing this deck I just outramp other decks and play my own proactive game so I don't want to develop a lot of reactive card picks. Thank you for the suggestions though, SirSchmoopy111! :D

When I see any blue deck with Infinite in its concept, Palinchron (with your Deadeye Navigator) is the first thing that comes to mind. I'm surprised you don't have it here or at least a Peregrine Drake. It would work nicely with Tooth and Nail. Unless you dislike infinite combos, your commander is perfect to turn any infinite mana combo involving Deadeye Navigator into a win con.

Also, no Burgeoning and/or Exploration? They provide excellent ramp.

Sorry, Megalomania, I don't do the whole infinite combo thing in EDH :P as fun as it would be... Haha!

Exploration has been on my radar for a while, but most of the time my lands are coming into play from my library rather than my hand and when they do come from my hand it's probably either very early or when my board is exploding and I have tons of cards in my hand. I'll give it a try though! :D

Yeah, combo isn't for everyone. My playgroup has learned to deal with it the same way I learned to deal with the idea of having to win or be the first one to die. Lol.

Is Laboratory Maniac considered too combo?

No, but aside from being awesome when I draw my whole deck he doesn't really do a whole lot, and if I do have that many cards in my hand, I'm probably winning already anyway :P thank you for the suggestion though, enpc! :D

Beautiful.

I don't get the Tezzeret the Seeker being in here though.

Glad you like the deck, snotice! :D he's mainly just some additional value. Being able to tutor up a Top or Map puts me in a really great spot and with Eldrazi in the deck, Lightning Greaves is generally GG :P

Why no Doubling Season?

Aside from my general and Avenger of Zendikar there are really only Planeswalkers that could abuse Doubling Season. Yes it's a fantastic enchantment, but in decks not focused around the +1/+1 or tokens theme it can become a little too situational. I will consider it and do some playtesting though, could prove insane!

Thank you Karns_Pyromancer for the suggestion! :D

If you want to get really dumb with it, add Followed Footsteps/Progenitor Mimic.

Also, Biovisionary+Infinite Reflection is a great win that can come out of nowhere.

With the emphasis on drawing, Chasm Skulker could get out of hand quickly.

i use a different version of this deck i use kruphix as my general, my win con is infinite draw and infinite mill

Cards no good Simic deck with combo shenanigans should be without (or in this case, cards that help abuse Prime Speaker Zegana:

Concordant Crossroads, Intruder Alarm, Cloudstone Curio, Doubling Season.

Here's my Zegana deck It's an elf tribal with blue for combo, but you may see some stuff you like!

http://tappedout.net/mtg-decks/zegana-elfball/

Thank you for the suggestion, RumoCrytuf, but unfortunately there are a ton of counter decks in my meta, so Cavern needs to be there to resolve some of the big, game winning spells :D