Any Necro Here Beat Uber Ancients Yet?

I can clear the tristram ubers with my poison nova necro using decrepit and clay golem, but I haven’t been able to beat the new ubers yet. It starts out fine, fighting all three of them until they start to use their spells, which melt my merc.

Is there any trick to separating them?

Bone Wall + Urdars + Clay Golem + Enigma + Beast + Merc equipped with Kiras & COH.

Woestave Iron Golem as an alt to Clay Golem “just for fun” if you please.