Solo Mythic Jailer with BeastMaster

Trying to solo Sepulcher, which I have done until this point. Level 605. BeastMaster spec. The Jailor keeps mind controlling me and ending the fight. I’ve read other places where I am supposed to hide behind the pillars, but the pillars never come up. Also I tried running to those puddles, but it only helps for so long. Every time I’ve tried, I’ve been reset. Any suggestions?

if you’re getting the mechanic that knocks you up, you have to jump into a hole with it. time it so that it knocks you out of the hole and you live. if you’re not getting that mech, probably can’t be done

Yeah I get that buff on my head but someone in a video said that I didn’t need to jump down in the hole anymore. Maybe that’s the missing link.

The ‘jump down the hole’ mechanic is still a requirement, which leads to the big columns being put up. The mind control iirc has to be LoS’d. I only did mythic Jailer once so far but that is my recollection of what I did to survive.