They're not that hard -- it's just $30 for 6!

hold on, I thought that donation = gift shard thing was long gone ages ago, is it? 
Nope. In fact, with the Reward Codes, you can choose between the 3 Shards or the superkewl vrt-art Chimera. 
Wow, this changes everything!

On topic:
A good deck but I think that it is unnecessary to add 6 SoRs as they may clog your hand, imo, I always prefer to have the more important pieces to have the greater chance of appearing in my hand, which in this case:
Mitosis and Dragon, I suggest using only 4-5 SoRs and only 5 mitosis, replacing the 2-3 erased cards with pillars as this will prove more efficient for the scenario of having no SoRs or Mitos, but having dragons in your hand, you will have a better chance to play them quicker.
however that is only for that scenario, the chances of not receiving either one of those are low, the only difference now however with the current amount of them in the deck increases the chance of hand clogging, imho.