Lyn's C skill

What's a good C skill for a lyn using fury+vantage?
Unfortunately i don't have access to wrath rigth now, so I'm going with vantage+brash assault+desperation.
I'm still unsure about her ss, but for the moment I'm going with close defense.
She's +atk -res btw, so that limits ploy skills a bit.
Any suggestions?