Help how to build magic dual sword?

How to build magic dual sword?
Stat, combo and skill contribute
I'm new in this game and its my first time game.

 

Magic classes and physical classes don't do well together, especially if you don't have one of the martial weapons equipped (staff, MD, & knuckle). With a dual sword user, you wouldn't get any bonuses from the magic skills rather than if you had one of the martial weapons. DWs only get +2 MATK from INT, and only +1ATK from STR and AGI, so you wouldn't deal a lot of damage, though you could probably use wall for knockback and proration, but not damage; you should use physical skills for dps.

If you want to make a class that deals both physical and magic damage, you should equip knuckles with a magic device as your sub-weapon, or a staff with knuckles as your sub-weapon, use both the magic and martial skills, and split your stat points between STR and INT (staff+knuckle) or AGI and INT (knuckle+MD), though I would reccomend that you only focus on one damage type.