I like the idea of the condor-sized bat snatching up small prey on the desert at night, though the web spit doesn't really fit with that - the bat would actually need to land to extricate its prey from the webbing.
Good trap, though things like 'no escape' bother me. All illusions, the product of fallible mortals, can be broken with sufficent spellpower or other attributes/resources. Extremely Difficult, yes. Impossible - no. Go to Comment