Warrior Gank help!

[svartalfimposter]

As a priest, I would really appreciate an addon which either played a sound or showed an on-screen word or something to tell me when it would or wouldn't be a good time to cast my PBAE fear.

This would operate depending what stance the warrior who is attacking me is in. If he's in berserker stance, I want a big alert saying NO FEAR. As soon as he switches out of Berserker, I need it to say FEAR and play a sound, if possible.

Thanks for your help, I hope there's someone who doesn't play warrior who will help me!