For those of u who have made it into wing 3 u might of come up against Athyr bast already . Its a very hard boss seeing as her imp lord can hit u for 30k anyway to exploit this boss. have 1 person from the raid go inside the room while the rest wait outside. the doors will close locking that 1 person in the room and when he dies the boss will come through the door where it will be easy for the raid to kill her without the imp lord 1 shoting people. When killed the doors will reopen allowing u to get back in the room and procede.