doctorhydrogen

The one extra mana cost on Murder would seem to me to be worth it over Doom Blade to guarantee you can kill everything.

I'm all for building on the cheap. Bear in mind though that Fated Retribution, Divine Reckoning, Planar Cleansing, and Winds of Rath are all under a buck to buy. Pretty often they're the kind of cards that if you're trading with people online or in person you can make a deal for something you want that you'd take straight-up and then get them to throw it in just as icing.

Oh, and take a look at Savor the Moment, too. I just added it to my Bruna deck this week. It's under a buck to buy, and let's you take an extra turn for three mana but you can't untap. Since Bruna has vigilance the untap portion doesn't matter, so worst case scenario it's essentially three mana to draw a card and attack one extra time. I played four games with Bruna this week and got it out twice, and both times it won me the game.

Silent Arbiter would fit nice here.

Chromatic Lantern costs the same to cast as Obelisk of Bant, it provides the same mana, and it makes every land you have including Cathedral of War, an uncracked Panorama and Unstable Frontier provide any color of mana you want. I'd run a whole lot of stuff over Mana Cylix, too, namely Sol Ring.

Well there we go then :)

Nice call on Rise of the Dark Realms, I need to find room for it in my Nekusar deck.

There's a couple more Wheel effects I'd run, namely Teferi's Puzzle Box and Whirlpool Warrior, and Phyrexian Tyranny is another nice punisher at the end of a Wheel.

I also kind of like Library of Leng because it lets you keep from having to discard a Winds of Change you draw from a Reforge or something. YMMV there, but it winds up being really useful.

I'm a bit confused. that's a lot of cards for a standard deck, but too many dupes for an EDH deck.

Right, but how is that better?

In a perfect world, T1 you drop a land, tap for 1, kick it to your hand, and play FB. T2 you play a land, and now have access to two mana. T3 you play another land and have access to 3 mana.

vs.

T1 you drop a land and can play something with it, T2 you drop a land and play a Azorius Signet, and have access to 1 mana, T3 you drop a land and now have access to 4 mana.

In a best case opening hand scenario Fieldmist Borderpost gives you an advantage of 1 mana on T2 at the cost of having 1 less in T1 and 1 less in every turn from 3 onward.

And that's just with a Signet; Sol Ring is going to be an infinitely better choice than either, and if you have room to run both Sol Ring combos better with a Signet because you can T1 land->Sol Ring->Signet giving you five mana on T2.

I actually run Borderposts in a couple of decks and like them, but I run them in decks that also have Sol Ring, Signets, Talismans, Medallions, Monoliths, Thran Dynamo, and in some cases Worn Powerstone. It's a good artifact, but it's not one that when faced with a choice becomes my number 1 choice. Clearly it is for some people though, and I'm curious because I personally can't find the math to support it.

I've seen Fieldmist Borderpost in a few decks, and I think there's something I must be missing. If you vanilla cast it for 3 mana, it comes into play tapped and can be tapped for W or U. I'm guessing you plan to alt-cast it, so it will cost 1 to cast, but kick a land to your hand (though it can be a tapped land) and it still comes into play tapped.

Azorius Signet on the other hand costs 2 to cast, but it can be tapped the turn it comes into play (provided you have one free mana). It also doesn't kick a land to your hand.

I'm just not seeing situations where I'd rather have the former than the latter.

In a mono deck Nykthos, Shrine to Nyx will provide you with an absurd amount of mana. Crypt of Agadeem will probably get out of control fast , too.

Thrumming Stone could easily dump 30+ rats onto the board in one turn.

Cauldron Haze wouldn't be legal in a Bruna deck.

Battle Mastery is a MUST HAVE enchantment, behind only Eldrazi Conscription in how much damage it adds. Ethereal Armor gets out of hand fast, too, as can Celestial Mantle. Yeah, the casting cost sucks on Mantle, but Bruna doesn't care, BOOM from your hand to her back for free and you're now at 80 life.

I'd strongly consider Traumatize. Decking yourself for 40 cards in your first main phase means that when Bruna attacks she sucks 8-10 enchantments out of your graveyard onto herself, BOOM. You can do similar tricks with Mirror-Mad Phantasm and Tunnel Vision.

You're also running quite a few Umbras. At least in my Bruna deck I run every Unbra I can, and I've got like 11 board wipes (Fated Retribution, Akroma's Vengeance, Austere Command, Cataclysm, Day of Judgement, Divine Reckoning, Planar Cleansing, Rout, Supreme Verdict, Winds of Rath, Wrath of God). Cast a wipe, kill everything but Bruna who is wearing an Umbra, attack, suck the Umbra back onto her, BOOM, repeat next turn.

26 of your 28 creaturs have flying. Stuff like Magmaquake or Earthquake are going to function as one-sided board wipes pretty often.

Similarly 23 of your creatures cost 6 mana or more (and another 3 cost five). That means that about 90% of the time when you cast Disaster Radius it's going to deal 6-7 damage to every creature your opponents control without hurting yours a bit. That is probably going to kill everything play but your stuff.

Mudslide is going to also make it really hard for your enemies to untap their creatures without hurting you.

Wear//Tear is good, but for one mana more you can cast Return to Dust with the added flexibility that it can hit two artifacts or two enchantments or one of each like Wear//Tear, plus it exiles instead of destroys, so you can deal with Theros Gods, Darksteel stuff, things other people have that are protected by Avacyn, etc.

Lurking Predators would probably get you quite a few big fatties into play in a multi-player game.

I'm running an Edric unblockable deck so it was pretty easy to come up with ideas :)

-Lu Xun, Scholar General wins up being unblockable in 99.9% of situations, and draws you an extra card besides the Edric cards, too.
-Gigantomancer straight up wins games.
-Prophet of Kruphix lets you play all the extra cards you draw
-Thassa, God of the Sea is indestructible, has a big ass, lets you scry to smooth draws, and lets you make your couple of unblockable creatures (Kiora's Follower, Edric, Murkfiend Liege, Prime Speaker, Omnibian) unblockable for the turn.
- Quietus Spike works great with unblockable critters
- Nature's Will gives you another chance to untap and play the cards you just drew
- One with Nature gives some nice ramp on an unblockable creature
- Beast Within always feels like a must-have in green since it lets you destroy anything
- I'd run Capsize over Boomerang; yeah it's one colorless more but the option to buy it back if you have free mana is pretty valuable
- With all that Edric card draw I'd consider Reliquary Tower.

With this many big creatures Triumph of Ferocity is probably going to draw you a card each turn.

Guild Feud isn't cheap to have in play, but it'll probably get you a creature each turn since they'll win the fights given their size.

Revoke Existence or Return to Dust over Solemn Offering. Being able to exile a Theros god or Darksteel anything or artifact/enchantment protected by Avacyn is much more valuable than four life. I'd run both myself.

Wash Out cuts throat and ends games.

Entreat the Angels is a good card, but I've encountered very few situations where Storm Herd didn't do a lot more for the same mana.

You've got a lot of creatures with flying that will probably be able to get through successfully for damage. Coastal Piracy and Bident of Thasa would probably draw you a ton of cards.

With this many fliers, Radiant Archangel and Pride of the Clouds would probably be pretty huge.

Oh, and it's a cheese combo, but Kiki-Jiki and Zealous Conscripts is an infinite auto-win.

Agreed on Render Silent. Card is underrated. I'd also replace Mana Leak, people will have the mana too often. I'd use Dissipate in that slot.

I think you're a tad land heavy. You aren't running any mana rocks so I understand running more than typical, but even so I think 42-44 would be more than enough.

I'd find another card draw source or two, maybe Rhystic Study or Bident of Thassa or Coastal Piracy, and though he's expensive to cast Windreader Sphinx could draw a boatload of cards in a deck with this many fliers, even on other people's turns.

Maybe you're avoiding them because they're kind of staple-like, but Wash Out and Cyclonic Rift (overloaded) straight-up cut throats.

Since you're not running any artifacts you could run some artifact hate pretty easily. I'd start with Energy Flux for sure. You've only got a few enchantments (at least at them oment) so Reduce to Dreams could be effective, too.

Cloud Cover might also be really useful. Someone tries to kill your creature just bring it back to your hand for more flash shenanigans.

Blood Moon would be pretty brutal in this deck.