Wishblade Concept

Apparently I am not the only one who wants to Nephenee get Wishblade!
The most popular idea for it I heard was slaying and wo dao effects like Hauteclere and Nameless blade. Decent idea, helps her damage out put, but I think I have a better idea.

Neph is more of a mixed phase unit and her reliance on Wrath can make her a low hp warrior. I found Brazen skills especially to synergize well with her. So with that in mind, my idea is thus: Slaying effect at base, refine for Spectrum Brazen; +4 to all stats during combat when unit is below 80% Hp. Her stats are well balanced and a boost to all is very much appreciated. This makes her tankier, survive magic a little better, avoid doubles and double better, and most importantly patch her lowish attack up.
She doesn't even need to stack another brazen with this to be good, she can use her oft taken Fury.