i think hybid 90% is best rite now(even for chinese nuker)
It is my personal view about this game since fort war had been introduced,it is not about 1 vs 1 anymore..it is a group fight.So it is either offense or def build.
I have a warlock and want to change to wiz to give extra FIRE power for my union. So if u have wizz stay with it or if u want to switch,make near pure int to maximize damage

(of course warlock fun to grind with XD)