some random consideration:
The new ability of the "mage" keyword is too good, maybe "gem +10" is better.
Chaos wizard should at least discard non-rare cards, but now banish is really needed.
Deck import/export is fantastic.
"Invaders" is too weak, normal discard action is better; giving it attack 2, enduring(2) could be a solution.
"work in progress" it's good when you're stocking up recruits and gems, a good alternative to discard.
"Dark flame" is interesting, I've just made a deck with 13 zero cost common and dark flame (and chaos wizard); i wonder if it works.
The "ancient sage" actually is weak, it's good only in combo with vulture if you know what I mean; there aren't enough nature card right now, I suggest to make it "production X(N+2)".
"Avenging angel" is really fun, a good defense card, fantastic in combo with walhalla.
I don't think that beast deck was nerfed, it's true that now "overpower" deals less damages but it's usable also with some uncommons; and the frenzy keyword is quite good.
Awsome update.