Why are you running Chromatic Sphere or Chromatic Star if you have no way to abused it in the deck? Just for cycling they are probably not worth it.

Otherwise your deck seems pretty sweet!

First thing... +1 for the Prossh, Skyraider of Kher. Favorite general. I also really like the dragon tribal theme.

How does your deck seem to play? By the looks of it it seems a little expensive on the CMC. Have you though about adding a few more lands? If so I would start with a Cabal Coffers. You already have the other end of that black mana combo in Urborg, Tomb of Yawgmoth. Maybe bump it up a couple to help pay for all those big heavy dragons.

How has Ugin, the Spirit Dragon worked so far? does it seem to fit and run smoothly?

If you would like some ideas maybe check my deck list out at For the love of Prossh

The deck plays quite fluent. Hardly ever mana issues. I tried to buy Cabal Coffers this week but my LGC stores don't have them. Honestly Ugin has never hit the board yet and I've played the deck several times. I wouldn't be opposed to siding him out for something better. Possibly a mana generator.

Sept. 10 2016 Many new additions and combos added. A very lethal deck now. Have had 80% turn 7 wins or bether.

Open to all comments and suggestions but I think it's finely tuned now. Nearly unbeatable.

32 lands is working out for you? that seems really low!

I recently added taiga, badlands and bayou. As well as another mountain and swamp. Took out some unnecessary creatures and an enchantment.