Question on hard targect acquire spells

[FlameSoul]

I was thinking about some spells that do the following:
1) When activating allows to acquire multiple targects by clicking. When deactivating unleashes spell efect on tagets that were selected.
2) When activating you are able to draw lines (maybe red) on the map that only are visible to you. When deactivating unleashes spell efect on the line drawn (in the drawing order, at a constant speed).
Both spells should draw the casting area (maybe in some light green, but I don't think changing the colour would be the difficult part).

Any ideas?? Is this possible??

 

[FlameSoul]

Bump

 

[Squiggy]

http://www.hiveworkshop.com/forums/jass-functions-413/orderqueue-shift-triggers-84857/
This one should allow you to register points in a certain order.
You should think of some limitations, means the hero only casts the spell when a certain number of points is stored in your variable (index comparison e.g.) as well as a check if the range between the targeted point and your hero exceeds the ability's range.

Could become quite difficult I think ^^