“ A known immortal traveling with the PCs kills an attacker, and is arrested and charged with murder, since immortals cannot kill in self defense, being immortal.”
“ A magic speaking sword of great power-which is also a racist, obnoxious and unpleasent, so much so that those who carry it often *gag* the hilt of it, the taking part, with cloth to shut it up.”
“ A city is being plagued by a swarm of winged mice. The vermin can get anywhere, and they can easily avoid their normal predators by simply flying away from them.”