Much harder than it seems.

Tank debuff wrecks you, getting hit by a Meteor is assured to kill you, random fire can destroy the pillars, and lots of boss damage on top of that.

Eldritch Warding pairs really well with Glacial Insulation to help surviving the tank debuff, plus 2x Cauterizing Blink for raw healing.

Placement is key, you must always have a pillar available for meteor.

Mirror Images are mandatory to survive tank debuff, as the boss will hit your pet once your images are dead.

Music :

Meizong - Conundrum
https://soundcloud.com/argofox/meizon...

Enjoy :)