The legend of the Night Stalker is that it will take victims from the streets on moonless nights, and they will never be seen again.
A thousand years ago the archmage Martek defeated a terrible evil that was ravaging the Raurin Empire. He left a final prophecy: in a thousand years the evil would return, and must be defeated by a band of heroes.
The Travelling Oasis, the stories tell, is a gift of Khonsu; god of travellers and the moon. It appears only to those beloved of Khonsu who most desperately need it, and then only for a single night.