This is sounding more and more like Overwatch Lucio

Only one problem. How would you control the goblin's target? If you cant the likelihood of getting a kill in the fort would be really, really low because they would not target a particular person, and instead go to any random hostile. I'm still upvoting this because this is a good Idea.

dude .io means Input Output

So i'm NOT crazy I could have sworn I saw a dead body do this but no one in chat believed me...