Hm. Right of the bat, I'm not sure if I like dune scorps. Dune scorpions need some time to do a lot of damage, and this deck is not very capable of stalling in order to let them do their thing (not to mention, their quanta use conflict with eternity) Use Deathstalkers instead. Not only can they be used off of 1 snova, they also do way more damage than dune scorps shorter term. There are finer points, but that is the biggest thing I see.