A Two-Round Living Greyhawk Core Special Adventure
From the introduction:
Iuz's magnum opus of power and deception nears its climax. While the gods quake at the consequences of his possible success, the nations of Oerth fight amongst themselves, unaware of what is truly going on in the abode of evil on Oerth. Choose your allies carefully; the fate of Oerth lies in your hands. Part five and the conclusion of Ascension, the final core plot arc for the Living Greyhawk campaign. A two-round Core Special adventure set in the Free City of Greyhawk, Dorakaa, and realms beyond.
This adventure includes untiered encounters.
For character levels 12 to 18 (14 - 16 preferred).