Malevolent Memory (hidden arcana) bug?
nvm did it…took hours…what a horrible boss fight.
I’m glad you were able to brute force it. Likely you ran into the bug where he spawns a target crystal in the wall where you can’t reach it. When things work properly, you kite a little mob along so as to spread out the death circles the boss is tossing at you, kill the mob to get the color buff, walk through a fragile glass donut, then avoid taking any damage while you get to the shielded pylon. Hug it until it is fragile, hit it to destroy it, that eats a large hunk of boss health. Sometimes the mechanics switch up but that is the bulk of the fight and if you quickly wreck each pylon as it shows up the boss dies relatively quickly. I’m sorry if the pylons bugged on you