Polymorph Issues

What I'm trying to do is make a Multi-Polymorph using Fork Lightning. I already have a dummy units to cast the polymorph.

I got a variable for the region already. But how would I make my dummies target the units in the region individually?

If you want forked lightning, you want a cone, if you want a cone you don't want a region.

Begin with a region, try simple stuff for once, you can later care about cones, really.

Also, if you can pick the units in the region, then just create a dummy and order it to polymorph picked unit?

Fork Lightning target closest units to caster in some range around given target.

This is not cone...

uh... group the units around the target with the range r, run a loop and keep picking random units around the target and polymorph it, then remove the unit from the group, repeat until reaching the maximum number or the group is empty