PDF: in that image of yours blade wind was cast in storm. No wonder it didn't hit anything. With no boosts that is like prec-5 total... In dom2, never bring storm if you are going to cast ANY precision-dependent spells. Or bring wind guide too, they pretty much negate each other as much as magic is concerned.
Range also seems to have a huge effect on hitting. Blade wind is useful, but it must be casted *from the front* not from the behind of your troops. This of cource brings up survivalibity problems, but you can't have all you know
