Well, know that this is kinda messy, trying to explain the whole trigger. If you really want to have effects of your own, you should start reading tutorials, they don't bite. As i have seen, you lack of basic stuff, such as a damage detection system. If you don't want to learn through a ready spell, -I admit you are right- find out stuff on your own or tutorials. There is no spell to make you instantly learn coding/triggering. Also, if you indeed say this, you also lack of Integer A knowledge, another way basic issue to learn in triggering. The forums here are to help people, but explaining every bit of triggering in every map maker is just too much. I don't think i am the only one who is bored of making a mini-tutorial to every question of a map-maker, considering basic stuff, that is why this thread got no attention.
I would start from here:
http://www.hiveworkshop.com/forums/...-279/basics-of-trigger-enhancing-spells-7334/
P.S. Please, note that i am not judging you, I try to help you think in other ways, when you don't get response to one of your problems.
Like i said in another thread, i want to model high quality models, but, when i don't know basic modelling stuff, i just can't.
Edit: By the way, circles are made:
For each (Integer A) from 1 to 10
Loop - Actions
Set Point1 = (Position of (Your unit)) or (Target Point of ability being cast)
Set Point2 = ((Point1) offset by 256.00 towards ((Real(IntegerA)) x 30))
Unit - Create 1 Footman at Point2 for (Owner of (your unit)) facing default building degrees
Custom script: call RemoveLocation (udg_Point1)
Custom script: call RemoveLocation (udg_Point2)