I played around with nova decks for a few days and made an extremely good deck.
It can win most games, you lose only if you get a really bad draw or the opponent somehow gets a super good draw and you get an average draw.
Overall though, bad draws are limited: even with the worst draw you start playing important cards on T3 so you can still win.
This deck has pretty much every counter possible: lots of dmg, lots of anti-creature, lots of anti-shield/weapon, lots of damage negation (fog shield ftw!) and some healing.
The deck has little weaknesses and high win ratio. I also won 2 rare spins on Silver League and 5+ rare spins on Bronze.
I made 4500
on HBs today by just using this deck, the only HBs able to beat me were the black hole spammers and to some extent rewind spammers.
Hover over cards for details, click for permalink
4sa 4sa 4sa 4sa 4vh 4vh 4vj 4vj 4vj 4vj 4vj 4vj 55t 55t 590 590 590 590 590 590 5c1 5c5 5f6 5f6 5fb 5i7 5og 5og 61q 61q 8pm
Note that albeit it's very good against HBs it's not as good against FGs sadly.
The power of this deck depends HEAVILY on the fog shield to win, and FGs will steal/deflag them. :/
Hope you have fun beating HB with this baby