Dungeon Crawl Classics #47.

The desert city-state of Ashareet is plagued by a terrible curse. The only way to free the city before its people are destroyed is to sprinkle the tears of a djinni upon a cursed oasis. The heroes must travel to the Tomb of the Lost King, where a powerful effreet’s dungeon complex has long imprisoned a noble djinni. Only by freeing him and uncovering the ritual for breaking the curse can the heroes save the city!

For characters levels 6-8.