Hi Folks.
I have been on this site for too long whitout contributing anything, and I'm happy to give you this find:
Usually the problem with Thorim mostly in 25-man is in the arena event downstars, simply because there are too many different types of mobs are overwhelming the raid.
1.) Hard hitting mortal strike debuffer mob has to be tanked outside of the group in the middle.
2.) Healers with absorbing shield on them and aoe healing all of the mobs
3.) There are plenty of, well low hp trash.
As standard tactic your raid group have to Tank/offtank/interrupt, while taking heavy damage, especially on tanks.
Here comes the trick: as some of you may remember there is a nice proc weapon obtainable from Vanilla content:
Earthshaker - Item - World of Warcraft
It's called earthshaker. Get one warrior in your raid equip 1 or 2 with Titan grip, and it makes the whole encounter a tank/spam, since it really stuns the whole bunch of annoying mobs!:wave:
So you can just aoe them down don't need to worry about the healer mobs, and they won't interrupt your healers as well.
We have tried it both on 25 and 10, in fact we were unable to make it without on the 25 man firstkill(s).
The reason I've put this in the exploit section, is because it's not suppose to stun lvl 60+ mobs this effectively. The same thing applied to Nightfall
Nightfall - Item - World of Warcraft
It became too powerful so they nerfed it.
-gLn-