Howl of Terror
Events
A unit begins effect of ability
Conditions
Ability being cast equal to (Howl of Terror)
Actions
set Cast_point= position of (casting unit)
set Unit_Group= units within X of Cast_point
Pick every unit in Unit_Group and do Actions
set run_point= Cast_point with (random number between 100 and XXX) and (random number between 0 and 359) degrees
Unit - Issue picked unit to move run_point
call RemoveLocation (udg_run_point)
call RemoveLocation (udg_Cast_point)
call DestroyGroup (udg_Unit_Group)
This is the most simple. ( I didn`t work on WE so sorry for mistakes (I was making it how I remember triggers))