I have been playing this deck all morning and it is definitely fun but I am not sure about it, it feels vulnerable and slow to me but I am coming from playing invulnerable cards so i'm willing to bet my feelings are biased (love my phase dragons). The fact that when I play the Fractal all my mana is gone after the fact makes it feel slow, the only other experience I have with Fractals is a Dev/Vamp Fractal deck so obviously I don't have the problems with mana in that deck that I do with this one.
I love this concept, and my favorite part about it is that Dimensional Shields are useless against this deck. All morning I think I only lost 1 game to be honest but they all seem to be very close, only thing saving me being that its a 30 card deck so I am drawing almost all my DS. I also don't have much room in my hand for a very good Fractal because I have to hold all my DS to survive, that leaves me only getting 4-5 Psion per Fractal and then I have to destroy a Psion to proceed cause my hand is full and my Fractals and DS I have to hold. I feel like Psion don't do enough damage to make this small Fractal entirely worth it, the kill potential is slower with the 4 dmg Psion it seems.
I haven't found a very good time when i'm thrilled that the Spark is in my hand, mostly because of what I already said I don't feel like I have enough room in my hand for a good Fractal on the Spark in order to do a good amount of damage. This may be something that I take out as a result of the extremely situational damage output. I'm not sure what I would put in its place to be more reliant, I did have a couple games where it took way too long to draw a single Psion (chalks up to bad luck really) so maybe that. I will say the amount of DS is extremely important, those are my direct lifeline it seems which is a scary thing personally to rely on just because a destroy perm or steal will lose me the game easily.
All that being said it seems to be a very nice AI3 farmer because I don't worry as much about losing my shield, but it still happens. Not sure about PVP because personally I don't experience too many games where someone doesn't have an answer for my DS and it just feels way to slow and vulnerable to be efficient. All in all I do enjoy this deck, I plan on using it more today especially for AI3 which ive been looking to farm with a nice deck lately.
I am new here to the forums as well as the game, all my input is subject to the fact that I may not know what I am talking about. I like your deck and feel like it was worthy of my input and experience from the morning. I would give it a 4 out of 5 with two things to say about that. Not a 5 because it feels too slow and reliant upon DS, alternatively not a 3 because I did have a very successful morning with it. My feelings are mostly based on how secure I feel behind it but it gets a 4 because of its performance.