Our raid group had a fun night on The Blast Furnace encounter yesterday.
However there are some issues that doesn't seem quite right with this encounter.
Alright, I will agree that as a end-wing boss its supposed to be hard, but my issue is not with the difficulty of the encounter, but I believe there is a small oversight on Blizzards part here.
Il explain myself.
The premise of the encounter is to deal with the first 2 phases, controlling adds while doing the phases before The Fury have gained so much "Heat" that he will start to overwhelm the healers. Now, on phase 1, this is done by stopping the big Gronns that is pumping the heat level of The Fury, and on the second phase it has been confirmed by Blizzard that the "Slag Pool" is there to generate "Heat" for The Fury on all difficulties, not just Mythic.
However, here comes the oversight by Blizzard. Its stated in the Dungeon Journal and by the Buff/Debuff that The Fury gains when transitioning into phase 2 of the encounter. However, The Fury does not loose any heat when this happens.
Lets take a guess, and the intended thing to happen here was that The Fury would transition from Phase 1 to Phase 2 with the "Cooling down" buff, dropping his heat by 100/75/50% etc, however, this buff on the boss does nothing, because it slowly tick down the Heat instead.
I manage to test this, because we actually got to Phase 3 on a couple of attempts, and the boss seem to carry over the "Cooling down" buff for a couple of seconds of Phase 3, me (the tank) dragged him away from the middle and he then started to drop "Heat" slowly, 100,99,98 etc (you get the idea), but then as this is Phase 3, he goes into "Superheat" and stays at 100.
Lets say you Bloodlust and do Phase 1 very quickly, you manage to get The Fury out with just 50 heat. He will not drop any heat on the start of Phase 2, but simply continue to grow in heat from 50 and up to 100. If this is "Working as intended?" then I suggest you atleast remove the "Cooling down" buff from the Journal and The Fury. If this is also how it is supposed to be, this boss is very overtuned as you will have to bring healers to constantly spam AoE healing, as the "Blast" will be cast every 4-6 seconds from the middle of Phase 2 until the end of Phase 3 (Phase 3 is supposed to be the "burn" phase where you Bloodlust, etc)
Please correct me if my thoughts are wrong.
- Vrex