I was looking through my spell list and noticed I have never cast 607. I tried it out and felt it was a little weak. I have some ideas. If you read sounds it sure does look like it should be an area spell. Sounds also looks like a matching spell to camouflage and they should be better used together. The problem is that sounds has a 3 second mental rt and cannot be cast from hidden. Using sounds requires you target your mob. It makes using it in locations with more than one mob more difficult.
Placeholder for a something clever.