Found a bug

Brambleback doesn't gain any mana after his first ability cast. I think it has something to do with deaths defiance. Before putting it on he seemed to be casting just fine. Since I can't post a video, items equipped were spear of shojin, deaths defiance, and red buff.... Also not sure if he needs red buff for his "red buff" ability to work, but it didn't seem to burn enemies without it.