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
. 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
(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
,
,
and
. 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.