Target is too far above/below

[Gramul]

Makes sense for close range melee, not so much for range attacks.

[Mychael]

Yeah. It can get absurd sometimes (there's a spot around Bomb Barons, for example, where you have to run almost within melee distance to attack with ARC if they're on the hill)... It would make more sense to me if, in addition to line of sight, there was a 3D line calculating distance (I learned that formula in HS, I'm sure SE could do it), rather than separate calculations for X-Y and Z.