Dummy unit.

[iMephiles]

Can't find how to make a dummy unit appear at the center of where an AoE ability is casted, than make it cast a spell at it's location.

 

[iMephiles]

On second thought, I think I'm going to make the ability be casted at where the casting unit is standing, which is a lot easier.

 

[tommerbob]

Set a point variable to the location of your (triggering unit). Then create the dummy unit at that point, and have him do actions.