Hisataori

Hello Guys! I have a question: i downloaded and tested the Addon "Power Auras" for my Shaman. It works preatty well for my Lightning Shield, Berserking and some Totems. Now iam a little bit sad: i tried to let it work for my Weapon casts (Rockbiter, Flamet. etc.) but it doesnt work. I've tried a lot and then i noticed: maybe Weapon Casts are no buffs... am I right? Is thtat the problem? Can someone help me pls? greetings - Hisa