Generally it’s not a good idea to say a lot of deities’ names, or risk drawing unwanted attention and getting smote.
It would be very neat if upon saying a predetermined list of diety names a hidden roll that produces a range of either nothing or various negative effects through RNG was triggered.
It would actually make characters rightly respect the danger of uttering Shar’s name for example. Could add something like smite where if you’re farther from the alignment of said deity the chance or effects are more severe.