From the front page of the PDF:
A One-Round D&D LIVING GREYHAWK®
Iuz's Border States Meta-Regional Adventure
Brave words have brought forth a dire request from those seeking the demise of the Lord of Pain. Now is a hero's chance to do what they have many-times claimed they would ... take the fight to the doorstep of Iuz himself.
It is strongly recommended that this adventure be played after all previous Machinations plot Iuz meta-regionals. This adventure will run longer than one standard convention slot.
An event for very foolish or very skilled adventurers (APLs 8 through 16). Characters below 8th level play at their own peril.
Warning: Portions of this adventure are not tiered!!