Boomimmaboulder

Remote Farm and Hickory Woodlot would help with your mana generation and you can also proliferate them. So that's even more mana

Contagion Clasp or Contagion Engine would be useful for proliferating counters and the such. I'm not sure how well they would fit in here though, depending on your mana generation.

twincast could be pretty awesome for a deck like this.

and if you throw in some twincast cards, for only 2 mana, you would be able to get out a second bringer.

Channel the Suns is a 4 mana card, 1 green 3colorless, that gives one of each mana. Easily get out any one of the bringers with it.

also Temple Bell : )

Pretty much, this is amazing.

Underworld Dreams, Duress, Cephalid Looter, Blackmail, and Recoil are all nice cards.

Cosi's Trickster might be a good addition : )

It seems like it may start out pretty slow, especially if you don't start getting mana. Bubbling Muck could really help get out a lot at once. Evil presence would be a nice sideboard if you aren't playing against a black deck so you'll always have swampwalk.

Maybe you could sideboard some Virulent Swipe cards and some nondeathtouch creatures

If you are going to put Glissa in here you should add some artifacts! =D Executioner's Capsule could be pretty awesome.

121.2. Counters on an object are not retained if that object moves from one zone to another. The counters are not "removed"; they simply cease to exist.

Maybe take out the Mutagenic Growth or Untamed might and put some Virulent Swipes in. Of course I suppose infect will lower the creature anyway, but a 1 mana +2 deathtouch with rebound is amazing.

I like the new lands a bit more, especially those that give combinations. The addition of Dreadnought makes your Academy ruins even better than they are already. You could win a game in no time flat, I'm not even sure I would play against this deck lol

I don't understand why you have Force of Will? Why not use Counterspell or Mana Leak?

Soul Barrier is a pretty cool card that can hinder your opponent and/or change the battle I'm just not sure what you would take out for it. Taking out Gitaxian Probe and putting in Telepathy might be helpful.
Noble Benefactor is also really useful, but it can be very helpful to your opponent as well.

You may want to put some normal lands in here since a lot of your lands will come into play tapped. Maybe take out the Creeping Tar Pit and Lavaclaw Reaches since your other creatures should do the trick. Of course I can also see how you might want to wait in case you didn't have a Torpor in you beginning hand. Also since you have some blue in here you may want to add Index or Spy Network so you can be ready for anything coming up and control how your deck will play out.

You should sideboard Cosi's Trickster. I love you

This deck is pretty cool. I like Maralen. You might need to add some more creatures. I can see it being overrun. Or a Mana Leak/Counterspell or Doomblade.