Welcome Card Master. I got here through Kongregate myself aswell!
Concerning your deck, there are some things I would change, but I don't know if you have the cards for that.
Generally, nova's are used in smaller decks then yours. They are only really usefull in the start of a match, because later on Quantum Towers will provide enough quanta. In big decks like yours you'll get nova's much later then needed, so in my opinion you can remove them from your deck.
About your weapons, they're good. But in a rainbow deck Eternity and Pulverizer would be much better. If you can obtain one of those two, I'd put them in. (Owl's eye is good though)
These are the changes I would make:
- 6 Nova
- 2 Flying weapon
- 1 Sapphire Charger
- 1 Phoenix
+ 1 Otyugh
+ 1 fallen Elf
+ 2 Quintessence (for the Otyugh and Lava Golem preferrably)
+ 1 Steal
And possibly replace Fahrenheit/Titan with Eternity/Pulverizer
Using existing decks and adjusting them to your own taste is something I do aswell. Nothing wrong with it imo.
btw. Have you beaten any false gods yet? Or completed all quests?