Does the 'spells' affect non-sentient beings, like animals? If you were in, say, a forest, and needed to cause a distraction, then setting that spell off would send all kinds of trouble through the area. Larger animals would attack other animals or humans on sight, simply because they'd get the dread, then turn that into fear and it'd just grow and grow. 

Or does it not do that? idk. Just a thought.