This fight is split into 2 phases. In the 1st phase you burn down the boss’s mana shield while taking care of some adds , and in the 2nd phase you just kill the boss.
The 1st phase represents the longest part of this battle. What’s most important during this phase is to make sure you have enough dps assigned to the adds while still keeping some dps on the boss. If you are constantly getting overrun by adds then you should assign more dps to the adds. If you are constantly hitting the enrage timer then have more ppl. on the shield.
At least on the normal mode it’s not such a big deal to distribute dps. But I do believe that in the soon to come heroic versions it will represent more of a problem. Basically in a raid you got classes with mass aoe abilities, aoe that hits up to 10 targets, like mages with blizzard and classes that can cleave. How should these classes dps?
Ideally you will want to have the cleave classes, classes that have naturally occurring small range aoe abilities on the adds. This means fury warriors with whirlwind and retris with divine storm. Sill good but less effective are combat rogues with blade flurry. But don’t think that keeping only melees on the adds is the best solution, a well placed blizzard can also help. Balance is important.
1st of all the adds will cleave you just as much as you cleave them, it is often that I’ve seen a rogue or a retri getting two shoted by the Fanatic Cleave (when 2 fanatics are tanked close to eachother). Also, once the adds on your side get taken down melee need to either stay idle for a couple of seconds or to run up and down between the boss and the next set of adds. In both cases loosing valuable time.
Note also that spell DPS will not be able to harm Adherents while Shield of the Occult is active. More Importantly Reanimated Adherents can only be harmed by physical damage while Reanimated Fanatics can only be harmed by spell damage. mind controlled
All in all, at least for normal mode, If you find this Adherent Fanatic reanimated – non reanimated stuff a bit confusing just keep Physical dps on Adherents and Magical dps on Fanatics and you should be fine. Or even better if you notice you are doing 20 damage in an add just switch.
On the 25 man version you will have two groups of adds appearing from each side of the room, with each group consisting of 3 adds, 2 adherents and 1 fanatic or 2 fanatics and 1 adherent. You will also get another random add in the back. On the 10 man version you will get only one group of adds , spawning from one side of the room and then the other.
Besides the adds you will heave to deal with getting mind controlled just like on the Kel'Thuzad fight. You will want to CC whoever is mind controled. Perhaps Cyclone is the best form of CC because it also prevents eeehm… uninformed damage to that player and it can’t be broken.
You will notice the green Death and decay, just like DBM says… stay out of it. Curse of Torpor increases ability cooldowns by 15 seconds. It should be dispelled.
Phase 2 begins when her shield goes down. You will want to delay dps on the shield until almost all the adds are taken care of. During phase 2 tanks should switch aggro as they get a stacking threat debuff.
Players will be chased around by Vengeful Spirits. If caught the player and everyone close to him will take serious aoe damage. Everyone needs to keep an eye on these Spirits and just be quick to run away when you see them anywhere near you. With the melee bunched up around the boss these spirits are quite dangerous.
The frostbolt cast needs to be interrupted. Ideally you would have a rotation set up between 2 dps and then have 2 other dps to back that up, or if you just don’t want to bother with it you could just have everyone that can interrupt interrupting. Sure, the same cast will be interrupted multiple times but chances are few frostbolts will get through.
