Okaay.. part by part.
In general, it's a pretty good deck and idea.
I would take out the Phase shield, with only one, it's not going to do much.
I will probably run better without the Electrocutors as well.
I don't think you need the obsidian towers either, so you can take those out as well and it will run pretty smoothly, I'd say.
It's just a small stall in case he gets a bad hand or he is taking too much damage by the end of the game (Phase Shield.)
Electrocutor is damage, and also Lobotomize's the opponent's critter, especially those who might turn out making a big problem for him. (Ex : Purple nymph, even though you don't find those very often. Or if you just want to be more tactical and think of something that appears a lot, Ulitharid and Mind Flayer.(
The Obsidian Towers I --Think-- They are a alternate route for quantum, if he faces a Pillar Destroying deck.
To the original deck now --
With only 2 liquid shadows it won't help much - But then again you have those TU's, but the liquid shadow might just be too late. I'd recommend putting a few more or if you have it, add a Obsidian Nymph (Do not take out the liquid shadows you already have) for both damage and L.S.