So we made a normal group for BRF today with some 6/7M guildies and a few friends, everything died quickly except for Blackhand. We had about 10 pulls on him and got him sub 10% a few times, but one thing about phase 3 doesn't make a lot of sense and it just seems like we were doing something very wrong.
Basically in phase 3 he casts Massive Shattering Smash when on 100 energy (like in the other phases), except now it does 1.2 million damage and a 200k DoT for 10 seconds, split between all players in front of the boss. We tried having everyone soak it, but the DoT was still ticking for a huge amount, killing 5 people instantly. After that we just decided to have me solo soak every smash. The thing that's not clear to me is that after a smash he goes back up to 80~ energy straight away, so he basically just spams his smashes throughout the phase. When we soaked with multiple people he also gained this much energy.
Is it intended that he gains so much energy and just spams his smash for a retarded amount of damage? It seems like we're doing something fundamentally wrong there.