Act3 Merc with IK barb Question!

[Shadowbane]

Hello all! I'm Shadowbane on Ladder, Character name SingingBard. I play ladder. and working on IK barb style, I'm curious considering's everyones talk is about act2 merc i feel that the act3 is the underdog of them all. I'm wondering what set up would be good for items. Stacking auras on it with runewords? A frost act3 merc im guessing, mainly used for CC and killing things while im spinning around with a purty hammer and bashing them to bits of shiny things Westside