Dude I think it's a great deck but I have a few minor suggestions.
- Get rid of the Fractals and TUs. I know it kinda messes with your theme, but your creatures are supposed to be immortal right?
- Those shields aren't gonna do much if you only have one of each. I say cut them.
- If you don't have any shields, no point in using slow creatures like Immortals and Phase Dragon.
- Those amethyst towers might give you a bit too much quanta. I mean, quanta is great, but still, dude, overkill. Scrap 'em.
- Chaos Seed and Lobo are a little unreliable as control and won't help you deal with a lot of possible threats. You might want to try something else.
- Seriously dude, YOU DON'T HAVE SIX AETHER NYMPHS. Wake up. This is the real world now.
- Using mindgates might not be the best idea here either. I mean, what if your opponent's deck isn't nearly as awesome as yours? You might wind up with bad cards like Black Hole and Shard of Sacrifice.
- Whoops, looks like you don't have anything to use quanta on. Those aether towers probably won't help you much. Same with the novas.
So after my little revamp, your awesome deck now looks like this:
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8pu