Originally Posted by
Synthaxx
Don't. Have all your ranged group up and one person calling it over voice chat. Spreading out makes the ghouls run all over the place (since you know, there's always at least 2 that ignore the add tank >_<) not to mention shadow traps everywhere. I did LK H at 85 a few weeks ago, and having all the ranged move as a group for the traps made it much easier to manage.
Having one in melee is the worst, but it's manageable. If your melee see one in their range, just tell them they NEED to simply stand away and do nothing. Don't let them nuke the adds as they risk spawning another trap on the add tank. Just have them stand there until it's clear.
Infest isn't an issue. At all. Some people might die to it, they did in our run, but that was when everything was going crazy and movement was needed.
On Valks, EVERYONE EXCEPT LOCKS moves into the middle. The locks put their teleports at the very edge and then stand around 10-20 yards outside the group. The valks will automatically go for them. When they get dropped, they simply teleport and go back to nuking. EVERYONE ignores the Valkyrs, and just focuses the LK throughout, only moving out when defile is coming.
Inside Frostmourne, everyone runs of their own accord. Make sure people have their camera above their character at max range, and then just tell them if they see a purple glowing orb or ghost above them, to move away from it. At 80, this wouldn't have worked, but at 85, the splash is manageable, even if a direct hit isn't so good (it still takes around 70% of someone's HP if hit directly, whereas splash is AOE Healable). Have all your ranged spam their AoE. Boomkins put up starfall, Locks spam Seed of Corruption EVEN if they're not affliction, hunters multishot. Melee and healers run around surviving and assisting with targetable cooldowns (Hand of Sacrifice, Raidwall, both are very potent here). No one, not a single person, can die here. He WILL 2-shot Cata tanks due to the buff he gets.
AS SOON as you get out of the first FM phase, spread the hell out as there'll be an instant defile. Do not, for the love of god, run back into it or even look at it. This one has a habit of being overly sensitive and spreading even if no one thinks they're inside it.
When he spawns the spirits from his blade (the ones that float in the air), ALL RANGED switch to them. They've got 65K HP from what i remember and there's around 15-20 of them. Ranged AoE is good here, but save ones with cooldowns for Frostmourne. Single targetting as they come down is beneficial, moreso if a tank has taunted them. I know as add tank, i had to use Holy Wrath and both taunts to get enough of them onto me. Then, if they weren't dead, cooldowns up. I got hit with about 5 of them without cooldowns available at one point and was left with 20% HP. They REALLY hurt. Having all cooldowns up and i could have soaked probably 12 or so before dieing (but with healers, it's not that bad if i do have CD's up).
As for positioning, P1, tank the boss to the left of the throne by the pillar, and the adds around 15 yards south of that. P2, tank him in the middle of the area. P3, start tanking him north, and when he spawns the spirits, kite him south. Rinse and repeat.
You'll get more than one FM room phase. It's a simply fight in practice and once you get it, you'll realise how easy it is at 85. There's more theory to it than in actual execution.