I think arcane only come into affect once you infuse the sword with elements, in which case it start ignoring STR. ie, no point leveling both for the same weapon.17 Str, 14 skill, 8 arcane :0. It scales really well to strength and supposedly arcane when you power it to +4, (B str, B arcane) but I see no differences to my attack when I increase arcane. Can someone explain this to me?