This class system is so different, i don't know yet whether it's a good thing or not, because i can't understand how humans developed those 4 specific abilities "naturally", i get the aura thing, which is similar to magic and mana and all those "inner forces" of other fantasy settings, but i don't like the idea of "yeah, we got the aura stuff, but it only works on this 4 classes of weapons for no reason"