You sure you're in Prophecies, I see no visual cues as to whether or not that's in Eye of the North or not; other than your "TALUS CHUTE" implementation.
So, does anyone know the details? I found that the imps attack with a "longbow" range, and they won't cast the aura if they're outside of your range, making them semi-farmable...then again, other imps ARE in my range and don't cast it--and then there's the anomaly of 1-3 imps in each mob casting it. It's rather confusing 0.0