Using the ucp I thought this was the hardest raid boss to solo legit at op10. It always felt like a dice roll getting him to stand in the pools, even with singularities and deception. Used melee zer0. The other raid bosses I could beat with bore or CA
You have to start but not finish the side quest called "Beard Makes The Man" (something like that) and it's given to you permanently until the quest is completed or you move higher in difficulty (op levels do no reset or complete missions so you will have it until you complete the mission in UVHM)
