After a few years away I decided to come back when I heard about the update to UE4. What I'm trying to do atm is beat the Solo mode for the Raven King, specifically that attack he uses when his health is almost down. Throughout this fight he can barely get my heath down about 1% or 2% percent so its not my gear and I can't find any information on this version of the Raven King, only info that several years old about the original raid.
So what am I supposed to do when he does his "Devastating Attack"?