So first thing u need to do is fly to the Klaxxi rep quest hub and ur looking for Kil'ruk the Wind-Reaver - NPC - World of Warcraft
He has a chat option to fly u to the Clutches of Shek'zeer, now when u choose this u will get a new ability bar with the ability Sonic Divebomb
Once ur in the air u want to hit 1 then 1 again, for some reason it bugs the ability and u cant use it, immediately click the leave vehicle button to keep from flying around the zone
Here's the cool part, u keep the buff... Now whenever u zone u will have the circle at ur mouse to use that ability, it hits for around 450k dmg in an AOE, this is a one time use and u will have to get the buff again to use it...
So far i have used lock summons, mage ports, instance/lfr ques and always had the circle... U get the circle in BG's however u don't do much dmg with it
The only downside is u can only use ur movement keys... WSAD and Spacebar anything else will clear the circle from ur mouse, however u can just zone to get it back...