Lightning Shield is the Orc Shamans ability, it places the buff on enemies, and hurts enemies around the enemy unit. 3 Circular Balls, and as for your problem Aki, My main suggestion would be to, if need be, make the ability immolation based, then just create the buff on the unit. Unless it needs a cast range, in which case, I'd recommend messing with the "Targets Allowed" Portion.
Is the school system in your country similar to Chinese school system? I could never imagine being a teacher in a Chinese school, what's expected of students and teachers is just so different from what I'd be looking for as a teacher