I take it you cant get/afford the dual and shock lands? I'd add Opal Palace , Temple of the False God , Ghost Quarter and if you can afford/can find it Strip Mine for added board control for angels Entreat the Angels is good so is Platinum Angel , Serra Avenger , Guardian Seraph and believe it or not Mirror Entity yes he is an angel and a dragon and demon for that matter, as for dragons I'd add Bogardan Hellkite Knollspine Dragon and Moltensteel Dragon cause sometimes you have more life to spare than mana to pump up your dragons for the kill shot and Vampiric Dragon just for fun Malfegor cause he is a dragon demon, as for demons.....I not good with demons (thats my brothers thing lol) i would also ad more mana ramp like Sol Ring Chrome Mox Mox Opal Mana Vault and Mana Crypt (although if you cant get the dual and shock lands you wont be able to get the crypt) also just for fun and to add injury to injury add It That Betrays

Most of those cards I've already considered, and either decided they didn't fit the themes of the deck or they were replaced with something better. My problem with shock lands is that I just don't them or like ever using them, even if they are good. Plus, I still have no idea what I can take out of the deck that isn't as good as I think it is to trim it down to 100 cards.

All you need is really, Aurelia, the Warleader , Avacyn, Angel of Hope , and some ramp for a player to rage quit. The rest is just filler for when you want to stall out a game.

I'd remove Akroma, Angel of Wrath,Ancient Hellkite,Angel of Jubilation,Angelic Arbiter,Archwing Dragon,Furyborn Hellkite, Scourge of Valkas,Tariel, Reckoner of Souls. and Utvara Hellkite. I'd add Angel of Serenity ,Baneslayer Angel ,Bogardan Hellkite ,Demon of Death's Gate ,Dragon Tyrant Eternal Dragon ,Hellkite Tyrant , Mana-Charged Dragon , Master of Cruelties , Skithiryx, the Blight Dragon ,Steel Hellkite ,Thundermaw Hellkite and/or Urabrask the Hidden Weathered Wayfarer , Elesh Norn, Grand Cenobite , and Grand Abolisher for utility creatures. I would add from maybeboard Beseech the Queen , Condemn , Diabolic Revelation , Necropotence , Phyrexian Arena and Platinum Angel . And extra mana rocks, and tutors couldn't hurt.

Again, most of these cards I've looked at. This is my reasoning as to why they're not in the deck.

Baneslayer Angel - Doesn't burn, doesn't draw/tutor, doesn't do much to help the deck at all really. Yeah, 5/5 for 5 mana, but not worth $13 to put her in.

Bogardan Hellkite - Have other creatures and spells that do similar things, but can be done more than once.

Dragon Tyrant - Paying 4 red mana each upkeep would lock down most if not all of my red mana, especially early game. And then 10 mana, that's insane. 6/6 flying/trample/double strike doesn't seem worth it to me at that cost.

Eternal Dragon - It's only use to me might be the plainscycling, but that's about it.

Skithiryx, the Blight Dragon - I hate infect. It's cheap, and it's bullcrap.

Thundermaw Hellkite - My creatures are pretty much unblockable for a turn. So what? I can deal with their creatures in other ways. Not worth $10

Other cards - Not an angel, demon, or dragon, or too expensive. Sure, it's probably not good to stick to just those creatures types, but that's how I want to build the deck.

Reasoning why certain cards are in the deck:

Ancient Hellkite - A way to burn down a specific creature in the way.

Angel of Jubilation - Low cost creature for early game if hardcasted, also a way to lock down certain combos I see used all the time.

Angelic Arbiter - Slows down opponents

Tariel, Reckoner of Souls - It's fun using opponents creatures against them.

Utvara Hellkite - More dragons, and pairs well with Scourge of Valkas

The cards I don't mention, I see they aren't necessarily as strong in the deck as I think, but I don't see cards that would work better in favor of them.

How about Rakdos the Defiler ? Pretty good combo with Kaalia, since his first ability doesn't trigger with Kaalia of the Vast 's ability to bring demons in and attacking.

I'd replace Harvester of Souls with Lord of the Void , I'm currently playing a Kaalia deck as well, mine has slightly more angels in it than dragons and demons, but everytime lord of the void is on the table, my buddies get either scared, copy it, send it into a graveyard to take control of it. In all situations, it's just hilarious, and you'll likely hardly ever get a fail to search with it, If anything, put it into a maybeboard if you play against other aggro decks.

Lord of the Void definitely looks good, but this is mostly an Angels & Dragons deck. The few demons I already have are mostly for card ramp. But I'll definitely consider him.

Love the deck, and +1 for Skyrim reference. Check out my Kaalia deck, its quite similar: Heaven Can't Wait.

I would suggest fervor and hall of the bandit lord. Kaalia with haste is a very, very scary thing