Custom Attack Ground

After some recent testing I kind of made a custom attack ground ability. It works with orbs, unit splash damage, actually everything included in the unit attack damage, because it basically just orders the unit to use its original attack on an unselectable (can't even drag select) yet vulnerable unit. The thing is that you can target any point given its X,Y coordinates but also given a Z offset.

In the demo map I attached, I just added some basic funcionality to show what it can do, for example when you can't reach a target (wall,trees) , try hitting the air as your pit lord cleaves down the units to death, or using an orb of fire, you can also target the bottom right zone with cleave, invisible shades located there shouldn't take too long to die. Overall it is nothing impressive since it will just look like an attack ground, with the only advantage it works with orbs and every other thing that doesn't work with the 'artillery' weapon type.