Attacking Random Units/spots?

[meeio87]

My Friend is making a map and he asked me to help him with i trigger. i have no idea so i came here. ok he as a neutral hostial unit in the middle(so i can't use an ai) he wants the unit to attack a unit that every player has but he wants it to be random. so basicly he need a trigger that will cause a neutral unit to attack a unit of a unit group randomly.

if u need a better description just ask.

 

[MoodestMoo5]

• Actions
  • Unit - Order (Your Unit Here) to Attack (Random unit from (Your Unit Group Here))