So my guild went into Heart of Fear tonight. We managed to get Blade Lord down but I feel like we were doing something wrong with the Overwhelming Assaults. I'm one of the tanks btw.
At first we thought that it was just a simply taunt of when get a debuff mechanic. So I got one stack and then the other tank taunted of me. After his stack I taunted the boss back but now the boss would cast another Overwhelming Assault before I lost my debuff. This didn't happen all of the time (I'm not sure but I think we lost the debuff when Unseen Strike and Overwhelming Assault came of cd at the same time and the boss prioritized doing Unseen Strike) but lets say around 80-90 %.
So then we switched tactics and had the tanks taunt off each other at two stacks giving the other tank enough time to lose his debuff. This however was really risk since the tank runs the risk of getting one-shot by the boss. Our warrior tank seemed to have less of a problem with this but I as a blood DK had a lot of trouble.
The warrior was able to use shield wall on almost all of his second applications of Overwhelming Assault and when it was on cooldown he popped a small cd and was alright as long as he was topped off.
We alternated between our druids dmg reduction and icebound fortitudes on me. This worked if we timed it in correctly but to me it seemed like the dbm timer was off and the boss hit me before or way too long after (so that I didn't have my dmg reduction). This also made it hard to stack a blood shield since If I stacked it too early I would just lose it but If I stacked it late I would die.
We managed to kill him after a couple of tries but it still felt like we were doing something wrong. Are we missing something or do we just have to time our cd:s better and take the (in my opinion) somewhat off dbm timer into consideration?
Thanks