After placing the bottle, right-click and rub it; you will transported into the bottle. You can then listen to stories told by NPC djinn, such as the arrival of the djinn, the Court of Blades, the Silent City, and seven bad crocodiles. Upon leaving, you will be transported to either Antonica, Commonlands, or Greater Faydark depending on your allegiance.
EQ2i credits this article at Census for the info in this article. the last update on Census for this item was: Tue, 18 Jul 2017 14:49:51 +0000