Only tested this with oracles in sholazar basin.
First it requires you to be able to get the quest Power of the Great Ones - Quest - World of Warcraft.
After you have charged your crystal and gotten the buff you should move to 22,79 (cords).
The place you should look for is this:http://data.fuskbugg.se/skalman01/!!!11111one.jpg.
Now if you got just use a AoE ability, I used Consecration, if you got one in the middle of them all they will take 1,3-1,5k extra dmg because of the buff and die uberfast. Now just loot them for around 4s-15s each. It takes them around 20-30 sec to spawn after they die so it goes very fast.
http://data.fuskbugg.se/skalman01/!!!111one2.jpg
If this is a repost please tell me. I searched for all kinds of stuff but didnt find anything about this.