Chewrida

I know you have sol rings and all your lands are urza, but i really think you're gonna need more than 12 lands, i think you'll run into a bunch of problems with your mana base

Hide/seek is awesome, how would that work with isochron? would you have to choose one to imprint or does it imprint both and you choose each time you activate it.
Looks like a fun build to play.
No champion of the Parish btw?

This deck is good, but you need to have something to get rid of the creatures that do make their way out that you havent nevermore-ed and such. Journey to nowhere, oblivion ring, vapor snag, you should look into adding a few of those

Check out Mimic Vat, it's perfect for a deck like this

Thats a really cool combo, and it's really easy to set off. kudos

A nice touch to this would be Dash Hopes, check it out

my bad i didnt mean soul exchange, i meant soul conduit.. haha sorry, and theres nothing wrong with a deck thats too powerful =] and haha i know i love surgical extraction

soul exchange would be neat in this deck, you could always throw in a worship to make it very hard to even get you below 1, and one they do they'd still have to deal with phyrexian unlife =] A few more phyrexian mana cards wouldnt hurt, like dismember... neat deck man, i like it

Thanks for your thoughts on my deck, I don't think my deck needs grim affliction with the endless ranks of the dead with noxious ghoul. It's an amazing removal combo, you should look into it. Bottomless vault is neat but it takes a few turns to make it worth while and it has to stay tapped for that and that is the only thing i dont like about it.

I like your take on the zombie deck, yours seems to run army of the damned and endless as your win. You should look into gravecrawler, it's one of the best adds for a zombie deck, unless it's exiled it'll never be gone. I only have one sadly for my deck, i want more.

yea, i saw the planeswalker, just forgot to mention it =p but i agree it needs a better and/or more win cons. You really do have a cool concept, you just need to work out a few parts to it... as trollking said agent of bolas couldn't hurt to throw in

How is this deck suppose to win? other than your only creature that can attack, which would take a while and be very open to removal..

Cool concept with lux cannon, but it needs a better win condition

You should drop the hedron crabs for jaces phantasms =]

If you want to be able to supercharge your mana ramp, since you have arbor elf in here add in some overgrowths or wild growths. Neat wurm tribal, i like it, I love tribal decks

no problem =p

you should put at least 1 or 2 karthus in here so you can attack the turn you dragon storm. If you draw any of your bogarden hellkites it won't be a first turn win, karthus would compensate for that

You already have 4 utopia trees, you should drop the gemhides or the harabaz for Axebane Guardians. and i think adding at least 1 progenitus would be a neat add to this deck with your plentiful any color mana

When i thining about a lifegain deck and found my springjack shepherds and i saw cloudshift I thought, token lifegain it is with goats haha Glad i could inspire you tho

Throw in some alpha statuses!

Since you only have one primal surge in this deck you need something to give all your creatures haste or you'll lose the turn after using it, unless you use an elixir of immortality to put one or 2 cards into your library, which you can't count on every game.

Btw what is coat of arms in here for? you have alot of different creature types, so i can't imagine it would benefit you enough to play it, it would probably even help to opponent in a lot of cases more.

But mixing axebane guardian and overgrown battlement is pretty fun to do, LOTS of mana haha

This is very original for a door to nothingness deck, nice job! Might recommend intangible virtue, to keep your tokens untapped to block after they attack, and not to mention to give them a little more fire power so they arent killed by every creature who blocks them so you can continue to pump up druids repository every turn without sufficient loss of your creatures =p

Yea when you have a good enough life gain deck it's generally pretty hard to keep the damage up with the life being gained, some of their only problems i've come across is infect or infinite combos, or as you stated insta win combos. I'm glad your felidar in this deck seems like a secondary win, I like seeing life gain decks that doesnt completely revolve around him, your deck looks pretty fun to play.

If you have time you should check out my lifegain, It's actually the only one i've built that i've decided not to scrap so far. It's a completely different style of life gain than yours is. Let me know:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=353521