The deck seems much to big to be able to be used effectively especially with no hourglasses, you won't be able to draw the cards you need when you need them, whya re there 8 rare weapons cause you'll only be able to keep one, I'd suggest getting rid of all except eternity and pulverizer (possibly lobotomizer). The nova's seem uneeded in a deck this size as well as the pegasus, sappphire charger and 1 forest spirit. Also I'd get rid of the two SoD's as they're not needed just for the extra 40hp given.
I think there's better decks out there to grind with (faster) but maybe with a few tweaks it could be easy to grind efficiently with.