This urn is located near a resurrect shrine in Forum Highlands. If you click it you get this text.
- "You give the urn a good rug but end up with nothing but a dark stain on your sleeve."
If you click it again you get:
- "You rub the urn afain. Suddenly...nothing happens.
If you click a third time a group of Djinn appear with a Djinn Overseer. The Overseer can and will do massive damage hitting over 300 at times. Once you have killed all 4 Djinn the Overseer will become a npc. So far this npc does nothing. It appears this may be an anet practicle joke.