max fire skills, consume tainted for -15, and max bind demon and get yourself a cursed hf lister or spearbae and the entire game becomes your oyster. Heralds are short work chop chop and move on. Enough in mastery to have 1 consumed tainted, 1 bound demon, and 1 defiler.
insight
diabolos
flicker
2/10 ammy
mages
enigma
2x 10 fcr ammies
arach
res boots/wraithsteps
i dont even use any skill gcs and clean up as fast as I need to. Prepatch sunder etc, this thing rapes.
oh.... how about merc ?