So, first things first, I would take out the Eldrazi Temples and replace them with some better mana fixing. maybe a Chromatic Lantern or two, especiall considering how well this deck can ramp without them (while playtesting I got a 15 mana ramp by turn 4).

I'm not exactly sure what the point of the Ghostly Possession is.If you're looking for something to neutralize a threat, why not just go with Oblivion Ring ? it's more versatile and fits in the same mana slot.

Also, while playtesting, I realized that the biggest thing that holds your deck back is the lack of card draw. As i mentioned before, at turn 4 in one of my games, i was at 15 mana, but I couldn't draw an Eldrazi to save my life. You either want to increase the count of them, or put in some way to fetch them, or just some card draw.

Now, to some card suggestions =)

You may want to consider putting in some 1 mana defenders like Steel Wall , or Order of the Stars , or Wall of Vines or, in my opinion the best one, Perimeter Captain .

As for 2 drops, you may want to consider either Wall of Omens to help with that card draw, or Vine Trellis to help with the ramp. Or, in case you want to toughen up (no pun intended) your defenders, Stalwart Shield-Bearers could be a good choice.

2 more cards to think about, Plumeveil a card that I feel is one of the best defenders around because of it's versatile mana cost and the fact that it has a great power and toughness coupled with flash. And the second card is a risky card that fits the defender theme of the deck, Walking Archive . It helps your opponents too, so don't put it in lightly, but it can help you scrounge up the eldrazi creatures.

And lastly, if you splash a little black, Doran, the Siege Tower could work well in here.

sorry for the giant wall of text, hope this helps. =D

I think Ghostly Possession is for his own creatures to turn anything into a Fog Bank .

nemesis101 is right about card draw, with all the mana you'll have available cards like card:Blue Sun's Zenith will be awesome.

Basilisk Collar and Gorgon Flail to give your creatures deathtouch would help too.

Venser, the Sojourner and Stonehorn Dignitary is a great stall combo as well, and they're both in your colors.

@nemesis101 as hunter9000 said Ghostly Possession is to turn my defenders into Fog Bank s, perfect for stalling.

as for everything else you guys mentioned, thanks for the suggestions! thats a lot of good cards and i need to see what works and what doesnt. i do agree that i need ways to draw eldrazi, maybe put more in, maybe have more draw spells. lets see what happens!

Rolling Stones . I know its older and doesn't fit terribly well in your deck right now, but I wanted to let you know that it existed.

Now that I think of it, this could almost play like a turbofog deck, so adding Rites of Flourishing or Otherworld Atlas might be a good idea. Maybe not against decks with a lot of creature removal though.

As far as win conditions, aside from the Eldrazi, you could use Door to Nothingness or card:Azor's Elocutors.

Rolling Stones is a good idea, but the only Walls he has have 0 power, so not that useful here.

Thats was I meant when I said it didnt fit very well, but I wanted to point it out with your deck mainly being walls.

i like Rolling Stones but it doesnt help me now, i remember seeing a card that gives creatures power equal to their toughness, but i cant remember its name.

wow im not too smart it was in the comments. Doran, the Siege Tower is what i need

no, do you really on no lands for doran?

perhaps just take out the eldrazi entirely, put in another blue sun's zenith and a couple of lesser draw spells to draw into them... maybe even a comet storm...

i would also put more lands

@theonyc i dont need swamps for Doran, between Axebane Guardian and Chromatic Lantern i can get him onto the field no problem, playtest the deck and you'll see how much mana ramp this deck can produce.

@ezmariel i do need another blue sun, ill probably take out Silence and another 2 cards and throw in some more draw spells or Comet Storm , or cards of that nature. without the eldrazi this deck doesnt have another type of win condition, kind of a one trick pony, so i should look into other cards to help produce wins

i think Comet Storm would be better then bonfire, or maybe the devil one from innistrade

Comet Storm is great for a multiplayer finisher, but i find that Banefire is better for one on one due to the "can't be countered" clause

And card:Blue Sun's Zenith is a legitimate win condition. Especially once you've got more mana than they've got cards in their deck...

also Wall of Denial

i was gonna say Banefire but forgot its name, so i said the one already said