dragonchild

In your profile, click on your deck's name. Underneath the entry for sideboard are two buttons. The lower one says 'edit this deck'. Click on that. That should bring you to the page with the deck description text box, deck color checkmark boxes, and two brown rectangles reading 'main deck' and 'sideboard'. In those boxes, it should say 'add a card'. Click on that. From there, you can search for your card. Entering that will get you a list of cards. On the far right, there will be an 'action' column with a black button below, next to each card. Clicking that will add a card to your deck. Sorry if I gave you more info than you needed, but here's how to do it, and sorry it took a while to get back to you :P

While I'm here, check out Maelstrom Pulse from the new set, Alara Reborn. I think it would work wonderfully in here.

Your deck seems like it may be a little topheavy, with so many huge creatures and high mana cost spells. You have a few smaller ones, but I'd whittle the large ones (anything costing 4 mana or more, especially the ones relying on Spirit/Arcane spells to work well. ) down to the ones that work best and replace the others with littler things, especially more Rotting or Ravenous Rats. Also, try out Nyxalithid. It's pretty cheap to play and gets powerful pretty quickly in a deck like this. To really make this deck work well, check out Duress, Megrim, Sedraxis Specter, Raven's Crime, and Hymn to Tourach, and try adding more Blightning, Hypnotic Specter, Distress, and Ostracize. Watch out for Thought Hemorrhage from Alara Reborn, too.

It looks like you're running a lot of big creatures, so a few more smaller ones may help.
The best thing in here would be Smokebraider. You'd want four of those for sure. Another interesting option might be Soulbright Flamekin. Ivy Elementals are a great choice (especially with all the mana being produced by Smokebraider) because they're useful both early and late game. I would take out Rakka Mar for more Spark Elementals, or maybe even some Hellspark Elementals (they can be used twice for Pandemonium as well). I don't know if this deck runs into trouble with flyers or not, but Cloudthresher/ Tornado Elemental would help with those (depending on how big of a flyer we're talking about. If nothing else, they're good cards for a sideboard.
Lands look pretty good. I don't know how smoothly this runs, but if after playing this for a bit you have trouble finding land/making enough mana, it couldn't hurt to throw in 2-3 more land. Decks like this with so many large creatures can usually use it.
As for spells, I would get rid of Giant Growth and replace it with Mighty Emergence, and run 2-3 Rampant Growth (especially in place of Harrow) if you still have land problems. Pyroclasm/Volcanic Fallout would be excellent in here with all the big creatures, and will give you a fighting chance against decks that would normally swarm around you before you could get your big creatures, it's probably a solid move to take out the Shivan Meteors for those.

If you're looking for a beater that will fit well with this deck, try Shivan Wumpus. It'd be a solid way to beat down your opponent, and it would fit the theme.

If you're building zombies, get rid of all the non-zombies, and add more of the best zombies, such as Korlash, Death Baron, Lord of the Undead, and others.

Play around with the deck a bit, and figure out what you really like in here and what can go.
I do think the potential for a really cool Savra/Lyzolda combo is nice. All you'd need is some of the tri-color cards from Jund (many of which you already have at least one of in here) and a Grave Pact or two, and you'd be set.
If you wanted to do something like I mentioned above, the best creatures in here might be Sprouting Thrinax, Thunderscape Familiar, Scarland Thrinax, Mudbutton Torchrunner, Scuzzback Scrapper, Predator Dragon, and anything else that generates tokens or any other B/G or B/R creatures.

Martyr of Sands would be pretty ridiculous in here, especially if you could get your hand on some Reveilark (also solid in this sort of deck). Of course, if you're playing any sort of life gain Soul Warden, Beacon of Immortality, and Boon Reflection are also solid ideas. Your little creatures are especially vulnerable to red, so sideboarding some Barrenton Forge-Tender and Rebuff the Wicked (your Kithkin Zealot would also be a good thing to sideboard) might be a good idea. Windbrisk Heights would also be quite at home in this deck, maybe even to hide a Windbrisk Raptor. Lastly, with all the life gain and counters, why not some Cradle of Vitality? I'd replace the Kithkin Healer and Ancestor's Chosen with some of the stuff mentioned above. Lastly, if you find that Chant of Vitu-Ghazi proves slow, Life Burst might be a solid replacement.

A note about Ooze Garden/Exalted: Ooze Garden activates as a sorcery, so you cannot activate it during your combat phase while your creature would be pumped, or if your opponent is going to destroy it. Sigil Blessing would work, however. Perhaps you're best off just going pure Exalted with some Jhessian Infiltrators, Rhox War Monks, and Seaside Citadels.

By the looks of it, you're going for a lot of discard, which is really interesting with the white. Scepter of Fugue would fit nicely in here, and so would the Terminate coming out in Alara Reborn. Perhaps if you wanted to make more use of your creatures 'come into play' effects (and the Demon's milling ability), you could add something with Devour. Tar Fiend would be a perfect fit for this. Devour also works nicely with unearth...unearth a bunch of things, get their effects, attack, and then sacrifice the creatures.

Many of your creatures are pretty big, or you want to have as much mana as possible when playing them. You already have a bit of acceleration in here, but even more couldn't hurt. Llanowar Elves, Birds of Paradise, and Rampant Growth could help. I also recommend more Counterspell and Snakeform, maybe in place of Tortoise Formation. Other than that, the deck looks pretty good. I'd pretty much have to play it to make many more suggestions.

If you're already killing all of your opponent's creatures, I don't see a point to Reiver Demon other than a really big creature that costs an obnoxious amount of mana. I'd get rid of those for more creature tapping, such as Rathi Trapper. I'd also take out one of each Nekrataal, Nightshade Assassin, and Royal Assassin for Scarblade Elite. Personally, I would sideboard the rest of the Nekrataal unless your opponent is playing really large non-black, non-artifact creatures and put in Murderous Redcap instead. It's not an instant kill, but it hurts more creatures, can hit your opponent, and is harder to get rid of. If you're emphasizing Kiku, I'd get at least 1 more. Finally, a Raise Dead-type card will make sure you can always eliminate your opponent's creature. The rest of the deck looks pretty good.

I don't know how much money you're willing to put in, but Sacred Fountain, Absorb, and Meddling Mage are great in control decks. Some less expensive cards to look at might be Gwafa Hazid (you could take out 2 Pacifism for 2 of these), Goldmeadow Harrier, Plumeveil, and Grand Arbiter Augustin IV. I'd replace the Rainbow Efreet with any of these. In this sort of deck, I prefer Boomerang over Repulse, but I'll leave that up to whichever you prefer. Also, you could probably take out at least 2 Control Magic...they're expensive and you have more versatility with Confiscate. Maybe you could replace them with Oblivion Ring.

I agree with swapping out the Body Double for a second Adjudicator, but otherwise, this looks pretty good. Nice job.

...Actually, I'd replace the Angel of Mercy with 1 Akroma, 1 Serra Angel, and 1 of whatever little defensive creatures you may want to throw in here (or an Angelic Page, if nothing else)

Personally, I'd take out Angel of Mercy for something cheaper, and get rid of Karma, Righteous Cause, 1 Asha's favor, and Angelsong for sure. Light from Within and Angelic Chorus would be a good bets. Early defense such as Wall of Essence, Goldmeadow Harrier, Soul Warden, Swords to Plowshares, Path to Exile, and Gold Myr for acceleration will help quite a lot, too.

Oh, and with all the sacrifice, Grave Pact is a great idea.

I like the Luminous/Wayward and Luminous/Fallen combos. I'd focus around those, and generate a lot of tokens with cards such as Millitia's Pride, Raise the Alarm, Martial Coup, Promise of Bunrei, Twilight Drover, Elspeth, and Spectral Procession. Your other spells work great in here. Other than that, I'd get some extra mana generation going with Gold Myr, and maybe some early defense with Path to Exile/Swords to Plowshares, Oblivion Ring, and Goldmeadow Harrier. Vindicates are price-y, but worth a look in any White/Black deck. The only other angel I'd really consider keeping if you do the token theme is a Desolation Angel for good measure.

I think Vexing Sphinx, Cloudseeder, Compulsion, Llanowar Mentor, and Dream Halls might be interesting ways to help you discard cards (I especially prefer Cloudseeder and Vexing Sphinx for blue over the Aquamoeba). Call of the Herd is another very good Flashback creature card, for something a little cheaper than Roar of the Wurm, if you wanted more of that kind of card. Cool idea.

I would take out the Watcher Slivers and 2 Quilled Sliver for 2 Poultice Sliver and 2 Ward Sliver. Arrest is not bad, but Oblivion Ring still remains the king of white enchantments. To Arms is okay, but Warrior's Heart should be replaced by Door to Destiny, if you can. Also, if you happen to have any, or are willing to spend the money, Path to Exile/Swords to Plowshares are must-haves in a white deck. Also, look around for lands that have interesting effects, like Mutavault (though Mutavaults are pretty expensive), in place of a few plains. Maybe even some Secluded Steppe in place of 2-3 of them would help when you find yourself not needing more mana.

Not bad at all for mono-color slivers.

Thanks for the suggestion. I will try out the Soul's Might in here. Any ideas for solid acceleration that won't clog up the deck too much (all I can think of are BoPs and Llanowar Elves)?