The Ancient Lamp is a non-member den item. It was released on November 30, 2017, and it can be obtained from the reward chest after completing The Mystery Below adventure.
The Ancient Lamp appears to be made out of a dark grey-blue stone that is carved into a lamp shape. The lampshade has lighter and darker colors with grooves in between them to resemble a patchwork of stones. The base of the lamp is divided into a darker and lighter segment, both of which have glowing dots and lines as decorations. This item has only one variety.