From the publisher's website:

They say that in the very heart of the mountains of the Sultanate of Naqala, there lives a Tribe that rarely appears in the bazaars and markets in town. They call themselves the Artisans, and work day and night crafting precious items, inlaid with rare gems. Some travelers claim that the Artisans are able to craft unique artifacts, filled with magic and mystery... Represented by purple Meeples, the Artisans make up a new Tribe and add a new layer of strategy in the game. With their help, players will be able to have precious or magic items crafted. Some of them are worth Victory Points, while others unlock special powers. To accommodate these new Meeples, the expansion also features new Djinns and new Tiles: Workshops (where the Artisans craft their Items) and Specialized Markets (where players can buy specific Merchandise when needed). An impassable Chasm Tile, as well as Mountain markers, also force the players to adapt their strategy when moving Meeples on the board.