Dance of knives Meph T12, No gear changes to what I normally run.
I use to run Rustbitten charm and change stuff, while the kill was much quicker it resulted in bugged interactions more often than not with Mephisto. This build is really not difficult to push to mid 130's pits, though they are slower and you have to be careful, but I would assume if I actually geared to push I could probably get to 140 or so. I know there are easier ways, but DOK is fun.