Marauder Build for Merciless Malachai /Dominus

Ok, so.....I need a bit of help and here goes into the unknown of PoE Forum.

I need a gem set up or build that capable of taking down Merciless Malachai, Dominus, Piety under a few second at level 50-ish. Without Dying of course.

Unfortunately all the build I've seen is not for toons under level 70ish. So......can anyone help me?

I'm in favor of Chaos Golem, Stone/Flame Golem and ES, can ya'll help me find a build that work with those?