God_Concept

I would also recommend:

Memory Jar - Forces most players to discard a new hand of 7 before they get the chance to play any.
Psychosis Crawler
Magus of the Jar
Wheel and Deal
Flux
Laquatus's Creativity
Time Reversal
Windfall

Cards to consider:
Grinning Totem - Pick the creature you want Lazav to become
Jace's Archivist - Amazing mill
Larceny - All your creatures cause discard when combat damage is dealt
Sol Ring - Mana boost
Megrim - deals 2 damage on discard
Liliana's Caress - 2 lose of life on discard
Painful Quandary - Casting spells causes lose of life or discard
Cephalid broker - draw 2 discard 2 for target player
Lore Broker - Each player draws then discards
Mikokoro, Center of the Sea - force players to draw when you want so they have something to discard
Otherworld Atlas - Forced draw when you want so players can discard
Gibbering Descent - Very unique and fun for you.

Cards to consider:
Ensnaring Bridge
Crawl Space
Sphere of Safety
Web of Inertia
Windborn Muse
Braids, Conjurer Adept
Infernal Genesis
Rite of the Raging Storm
Wild Evocation
Excavation
Feral Hydra
Mana Cache
Saproling Cluster
Well of Knowledge
Dread
No Mercy
Dissipation Field
Aurification
Iroa's god of victory
Dolmen gate
Assault Suit
Angel of Jubilation
Cauldron of Souls

Forced Adaption is strictly better than Primal Cocoon.
Chamber of Manipulation for stealing.
Bow of Nylea to buff your commander.
Beastmaster Ascension for buffing your commander and your creatures.
Pyromancer's Goggles for doubling spells.
Rootwater Matriarch for more stealing, maybe combo with Krasis Incubation.
Tibalt, the Fiend-Blooded for obvious reasons.
Maybe Dack Fayden.

Cards I would Drop:
-2 Grim Affliction
-1 Incremental Blight
-1 Kulrath knight
-2 Midnight banshee

Cards I would Consider:
Massacre Wurm
+2 Contagion Clasp
+2 Sickle Ripper
+2 Quillspike

Cards I would remove:
Coral Trickster
Dew Drop Spy

Cards I would consider:
Rhystic Study
Illusionary Wall
Merfolk Thaumaturgist
Illusionary Servant
Wizard Mentor
Phantom Beast
Rishadan Cutpurse

Also,

Mishra's Workshop -> Lot of artifacts
Urza's Mine -> might be useful
Urza's Powerplant -> might be useful
Urza's Tower -> might be useful

Lightning Greaves -> Prevent Akroma From Dying to Removal, or being put into your library...
Swiftfoot Boots -> Prevent Akroma From Dying to Removal, or being put into your library...
Cloak And Dagger -> Prevent Akroma From Dying to Removal, or being put into your library...
Dream Chisel -> Get Akroma Out Quicker, somewhat.
Ensnaring Bridge -> Keep yourself from being swarmed to death
Grafted Exoskeleton -> You probably won't include this, however, it would make for a quick finisher
Chaos Warp -> Utility
Mage's Contest -> Utility
Strata Scythe -> Helps voltron
Ward of Bones -> Keep others down
Silent Arbiter -> Protection from swarm
Thunderous Might -> Helps voltron

I'd probably drop the elderscale wurm from this deck. Also two you may wish to consider, though one is mildly expensive, are golgari grave-troll and death rite shaman. Pharika, god of affliction may work well. Also Life from the loam and genesis. Lastly, Lord of extinction, bonehoard, and wights of precinct six.

Cards I would Consider:
Filth (Considering our playgroup)
Valor
Glory
Vigor
Dread
Deathrender
Golgari Grave Troll
Scion of Darkness
Sheoldred, whispering one
Braids, Cabal Minion
Reveillark
Scavenging Ooze (For other people's graveyards)
Stinkweed Imp
Shambling Shell
Tilling Treefolk
Life from the Loam
Mimic Vat (Obvious)
Elixir of Immortality (Just In Case)
Skull Clamp
Wight of Precinct Six
Volrath the Fallen
Mitotic Slime
Asceticism
Puppeteer Clique
Kokusho, the Evening Star
Yosei, the Morning Star
Jugan, the Rising Star
Protean Hulk
Voice of Resurgence
Yavimaya Elder
Summoner's Egg
Ashen Rider

Cards you should add:
Dawn Elemental
Pariah

Cards to Consider:
Eldrazi Conscription
Archetype of Courage
Archetype of Imagination
Meddling Mage
True Believer
Grand Abolisher
Augury Adept
Kira, Great Glass-Spinner
Soul Warden
Geist of Saint Traft
Darien, King of Kjeldor
Magus of the Future
Followed Footsteps
Stolen Identity

Cards to consider:
Rapacious One - Brings out creatures whenever you deal damage with it
Blistercoil Weird - Buffs off of just castings instants or sorceries
Back from the Brink - Recast cards that went to your graveyard
Goblin Assault - Gives you a 1/1 red goblin with haste each turn.
Followed Footsteps - Generates copy of enchanted creature at the beginning of each upkeep.
Tooth and Claw - Let's you sacrifice two of your tokens to get a bigger token which may trigger Purphoros again.
Jace, Architect of Thought - Possible draw and de-buffing.

Consider adding Thopter Assembly, Psychic Vortex, Followed Footsteps, Moonsilver spear, bazaar trader, Trading Post, Wall of Kelp, and Spiny Starfish.

Consider adding cards that can give your commander shroud unless you want someone to kill your commander when you play grid monitor and try to pass it off..

I would remove: Ætherize, Shifting Borders, Stifle, Brilliant Plan, Switcheroo, Donate, Legerdemain, Arcums' Whistle, Glimmerpoint Stag, and Control Magic.

Also, consider Grave Pact so that your opponents have to sacrifice any time you sacrifice.

1. Shadowborn apostles allow you to search for any demon. So why limit yourself to one choice? I'd include a few different demons to handle different situations.

2. I'd lose the exalted. It really only works well if you full-ass it.

3. I'd drop skyship weatherlight. Any of the black tutors will work just as well for much less. Sure it only happens once but you can grab anything. Also, if someone destroys your skyship weatherlight you lose all your artifacts/creatures that you exiled for the game.

4. I'd drop Belbe's Portal. If you can pay the 5 to bring it out you're only 2 away from playing the angel straight out, assuming you have plains. This really only lets you play the angel 1 turn early and takes up space in your deck.

Cards to Consider:
Ashnod's Altar - sac creatures for mana
Cloudshift - Blink any creatures as needed
Harvester of Souls - Card draw
Rune-Scarred Demon - Bring out your angel
Lord of the Void - Stealing Creatures
Prince of Thralls - Just a really mean demon
Blood Artist - Make opponent pay you life every time you summon a demon with your apostles
Xathrid Necromancer - Get zombies every time you summon a demon with your apostles NOTE: You're angel will kill these if you play it
Thrumming Stone - Drag out all your apostles
Cathars' Crusade - Bring out creatures and make everything stronger.

That's all I could think of for now.

This deck has too many enchantments, especially as they all rely on the small amount of creatures you have. This might be workable if you had a lot of draw or search. Personally I try for a balance of 24 - Creatures, 24 - lands, and 12 non-creature spells in a 3 color deck. One thing I usually try to do is portion out the creatures so that I have 4 of any creature that is 1-2 cost, 3 of any creature that is 3 cost, 2 for any must have with a cost of 4-5, and 1 of anything 6 cost and over.

Cards I would consider adding:
Giltspire Avenger - great as a threat
Ethercaste Knight - pretty great for the cost
Frontline Sage - When you're getting bad draws or just have a crappy hand
Ardent Plea - Get another creature or enchantment.
Dual color land for {G/W} and {W/U} - deck is obviously white heavy so these should help fill the gaps


Cards I would consider removing:
Serra's Sanctum - way more expensive than it is worth for this deck. Also note, if you have no enchantments it provides 0 mana.
Gaea's Cradle - way more expensive than it is worth for this deck. Also note, if you have no creatures it provides 0 mana.
Daybreak Coronet - You don't have enough low cost Enchantments to really make full use of this.

Hope this helps.

Definitely lose bladed bracers and maybe replace it with Asha's Favor.

Of course, any one in particular?

The mongrel pack has proven to be a great defender so far. I'm also able to use it with birthing pod if that pops up. The werebear could be used though. Thanks for the suggestions.

I like how you think.