heyy just one question. What merc is best for a smiter? Act 2? Offense? Defense? Act 3? fire? cold?

Thank You

it depends on your play style and equipment I prefer a act 2 cold aura but i plan on gitting exile so i will have defiance running but besides that i use the clod aura act 2 merc with most of my chars like i said it depends on how you play