Hold on now, I think we need to look closer at the rules for Fling. It does not state what types of objects can be Flung, just limit on wieght. Therefore, theroretically, you could Fling gasses, and liquids, not just solids. A CS gas grende just exploded next to you? Fling the gas right back at the thrower. This spell is useful for poison users. Also, you could use it to disarm opponents. Also good for throwing items not intended to do damage, like tracking bugs and such.