Hey..
Listen ofcourse the Bicheon skills (blade skills)
Then its your choise
ice =weakest but usefulll for iceing.
fire =strongest
electricity = strong to but most of all very fast in atacking.
i would say fire.
so bicheon and fire. But Then:
Use ice Buffs very important to rule out there!
You need electricity Buffs to! like running faster and ofcourse the parry ratio increasing.
And the fire you already have ofcourse.. Fire protection and pshycal damage increase.
so if you wanna be good, you could better start farming
i hope i helped