That is exactly the same strategy I use to beat her. It is not 100% but the issues are with paying attention. The problem is that the tank needs to move too and sometimes I just do not see the cloud in time (it kills VERY fast). The one thing that also helps is use RAID icons to mark your party so you can more easily distinguish who is getting the cloud.

It is not as important here since you will keep your toons in line but it will become more important on the 1st boss of shattered halls. It is basically the same fight except no adds and he fears so things will become more chaotic.

Ziran