In my opinion, this deck has potential. BUT, there are issues:
1 ) Purple Nymph isn't really a common card. What about those who don't have it?
2 ) Unstoppables seem like overkill. The gods which have dangerous shields are not many, and those shields can be easily smashed if you pack PC.
3 ) Two Purifies seem like overkill.
4 ) Ray of Light seems an useless addition. You can prevent deckout effectively even without it, if you add another creature. For instance, a Mind Flayer can help against some gods while at the same time provide cheap anti-deckout fodder for your Eternity.
5 ) Two Sanctuaries seem a little bit too slow to come out if you play a 50 cards deck. They don't really help against the gods you'll need them most - mainly Dark Matter - because they aren't reliable.
6 ) If you manage to reduce the cards in your deck, maybe the two Fogs will not be needed, and you may want another Air card to replace them.
7 ) Six Hourglasses are all good and well in a 50 cards deck, but they DO stretch your time quanta. If you ever played around with CCYB's variations, or with CHMD, or better yet with I've GotP Time, you know that it can get tricky. I've GotP Time has lots of Time Towers and still has troubles getting out more than two Hourglasses in the first turns. You may end up having too many bad draws and not enough Time to recover.
8 ) Your basic strategy is covered by 4 cards. They seem kind of lost inside a 50 cards deck. Why is there another Quintessence, by the way? For the Nymph?
The rest seems ok. You may want to open up to more possibilities for Mitosis, though...
