I'm using it to farm silver atm.
I'm skeptical of your unupped list for one major reason . Even if you have every creature in your deck out , if that shard is anywhere in your last 7 cards you still lose . There is a 23.33% chance that this will happen .
Maybe replacing a quicksand with a Nightfall or a Vampire Stiletto may improve on this , but without more SoP I would shy from using this deck for the 4th spin in Silver .