Based on Brozime's build, and it's probably the best version of it you can get.

I'd wager that 4 dash polarities is a lot, so perhaps you want to replace one of the dash polarities with a D polarity. I try to make my builds with flexibility in mind, so there you go.

Duration or strength Tauforged Reds sound good here, as well as casting speed yellows. Up to you really.