Change the mark to Earth and take out the Earth Pillars. That's probably the number one concern you have. If you're going to have Lava Golems, you probably won't need the Dragon, and the Fire Spirits could be swapped out for more Deflags, since those are ultimately more useful. I'm guessing that with the Imolations, you're going to play an Ash Eater, and then Imolate it right away, since it's easy prey to for Otys and Scarabs. Two Rain of Fires is good, but honestly, I'd take out that shield. It doesn't block damage, and if your opponent steals it, it completely shuts down your creatures. You could probably add another Lava Golem then, if you're relying on them for your damage, and use all of your excess Fire Quanta to Fire Bolt in the end-game. Another idea is, if you're changing your mark to Earth, to get the Hammer from the shop instead of that Dagger. I hope that helps. =D
(I know, it's a paragraph instead of being divided into a nice list. =/)