A totally creative and original deck :P

http://magic.wizards.com/en/events/coverage/ptdtk/Top-8-decklists-2015-04-11#chung

I know! Not only do I have that listed in the description, but it turns out Chung himself actually replicated the mainboard verbatim from a player at the SCG Syracuse Open, and only made 3 sideboard changes: Stephen Rice's G/R Dragons

I think I'd replace Heir of the Wilds with Dragonlord Atarka. I understand everybody plays Atarka, but I feel it would help.

I really like Dragonlord Atarka, but I'd probably need to add in an extra land or two to make casting her feasible.

Maybe cut 2 Crater's Claws for another forest and another mountain. And also maybe you should cut 1 Hornet Nest and 1 Xenagos, the Reveler for 2 more Roast in the sideboard.

I'd really prefer not to get rid of Crater's Claws since it's so versatile as either scaleable removal and as a game finisher. I've thought about adding more Roasts, but since I have eight 4/4 flyers, Siege Rhino isn't really much of a problem anymore. 1 in the main and 1 in the side seems fine. If I do end up putting Dragonlord Atarka in, I might just cut the Heirs for 2 Atarkas and another land, perhaps? There's a lot that I could do with this.

That seems like a viable option. You can playtest it and see which way works best.

Thanks for all your suggestions!

Have you thought about Atarka's Command ?

I have, but it doesn't seem very well suited for this kind of build. Most of the time, my guys already have flying and I probably only have one to two threats on the board at once, so the +1/+1 buff isn't nearly as powerful as it is with RDW-style decks. The ramp is pretty interesting, but we already have 8 mana creatures plus the Coursers which also let us hit land drops more consistently. The Skullcrack part of the card is intriguing, though, but very situational. The times I have played with Atarka's Command, it seems decent on turn 2 (burn you for 3, get an extra land) but really awkward in the late game, where it usually ends up being a Lava Spike plus something else that doesn't help me. The fact that it can't remove creatures makes it a bit risky as a non-creature spell in the deck, but it provides so much utility that I might test it just to see if it helps. I can see the "no lifegain" mode being helpful against Sidisi Whip, Devotion, and Sorin, Solemn Visitor, and the buffing mode as good against control, but I'll have to see. It could be a sideboard card at the very most, I think.

I'm just gonna +1 even before I see the deck due to the reference. Rock on bro, rock on.

I would replace Ashcloud Phoenix with the new dragon, Avaricious Dragon card draw is better than it continuously coming back in my opinion.

Thanks, SirFowler! Thought it was catchy and fitting for the lightning-breathing dragons and the fiery phoenixes. @Lifa: I actually did that for FNM tonight, and it worked out reasonably well. I only cast Avaricious Dragon once, and I ended up drawing only two lands before he died...but I think he'll be decent in this deck. He helps you out while you're in topdeck mode, which is fine. Also, it's often fine to discard a Dragonlord Atarka that you don't have the mana for yet when you've got a Haven of the Spirit Dragon sitting around. Plus, he turns on Draconic Roar and is protected by Thunderbreak Regent. So far, I think that makes him better in this deck than the Phoenix, but I may end up changing my mind. I also ran two Sarkhan, the Dragonspeaker in the sideboard because he doesn't die to Languish, unlike the vast majority of the rest of the deck.