Hey there ownedcore community. I know icc is old and no one really cares about it anymore, but maybe there is some of your out there clearing it every week to get those last reputation points to get your title. This here requires a "get out of combat class" which includes hunter's feign death, rogues vanish, priest's Shadow G u i s e. Or anything else that you can think of because i can't remember. See now for this, it isn't clearing the first few mobs and resetting and then running back and that again and again. Its actually a place where you can keep killing a certain amount of guys and just resetting by getting out of combat.
Steps to the guide
#1. Get into a raid group or not(idk if they took that out) And set it to 10m and walk in.
#2. Clear up to right before the room that is before Sindragosa - NPC - World of Warcraft (This room/section is called Frostwing Halls)
#3. In that room there will be waves of mobs that come out and you can aoe em down or really anything you want.
#4. When you enter and move more to center, Spider's will start heading down from the ceiling with little spiders, then a wave of random other people come out and then once all those are killed(don't exactly know how much rep but a decent amount)
#5. Then you continue killing until the second wave of spiders come down and you get out of combat.
#6. Once your out of combat, they will despawn(i hope, because thats what they did for me) and then in approx, 30sec-1min then will respawn and they will start over and you will have to do it again.
Enjoy my find! I really hope it helps those few set of people who are still going for this rep! Sorry for my lack of screenshots because at the time i wasn't even thinking about this. Good luck farmin tho!