[Striiker]

On classic, you could "social root" a mob if it was in proximity to another on its faction. Even if bother were not engaged in the fight, if the other was close, the one mob would not run at low HP. This sort of happens now but it's not quite perfected I believe. It seems that mobs will not run currently provided both are agro. One can be rooted or fighting someone in which case the low HP mob will not run.

I recall using this to prevent runners in places like Blackburrow and Guk back in the day on live. I could fight one mob while it was close to another of its kind (around the corner for example).