Nova/Supernova? Supernova or QTs, Novas won't help you. However, your build is closer to a timebow, so it's probable you will deck out sometime if you run out of quanta to power your Eternity. The most popular solution to this is to add a Time Factory if you feel the lack of
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. You can go without it if you think you don't need it, not a big problem.
Hourglasses: to draw through a deck like this you'll need at least three of them. You have few copies of each card, and you'll need them all.
Graveyard: most people prefer the unupped version, because it's cheaper (you are going to use the skeletons to mutate them anyway) and you already have put some stress into
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(specially with this double-BoneWall build). This is also why you shouldn't add plagues (and on top of that they are really lame against any god but Eternal Phoenix).
Bonds: keep them, in a timebow they heal as much as 2-3 shards, on average.
Quanta balance: you use a lot of
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,
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,
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and
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. Get more QTs if the lack of quanta is an issue.
Other cards/changes to consider: PA, changing all your Supernovas to QTs and going time-mark.