Decoy Illusion

You summon a decoy copy of someone that you have seen in the past (Wearing the same clothing as they were at the time of you seeing them) or can see at that moment (Wearing the same clothing) that will walk in a straight line in front of you (With the same way your character walks). You may choose for the decoy to stop when you want it to, the decoy has no collision with living creatures but it does have collision with walls and will stop walking if it runs into a wall. The decoy can not climb nor can it walk up steep ledges.