Treasures of Aht Urhgan Mission 13
Lost Kingdom
When you give Pyopyoroon the vial of Jody's Acid, a cutscene will begin and you move on to Mission 13. You'll receive the Vial of Spectral Scent you need. When you do, head out into Caedarva Mire through the west exit.
At (E-10), you'll find a cemetery. Look around for "Jazaraat's Headstone".
If there are multiple people in your group who are doing this mission, have each one check the headstone only once for a cutscene. Then, once all participating members have seen the cutscene, have someone in the party check it a second time to spawn an NM.
Jazaraat, a 66-67 Fomor Corsair will appear. A full party of 70s should not have a problem taking Jazaraat out, or smaller parties of skilled 75s. Be cautious at night, as nearby Guard Skeletons will aggro you as well.

Once the NM is dead, quickly have each member check the headstone again to receive a key item: Ephramadian Gold Coin. (Even those who are only along to help need the key item to do Mission 15).
