A One-Round Living Greyhawk Tuflik, Fals, and Velverdyva Meta-Regional Adventure
From the introduction:
For three weeks now, there has been a gale-force wind near the city of Ekbir. You know that it is a sign that the Air Node is now fully active. Are you ready to brave the fury of the evil elemental air?
A sequel of the Three is the Evilest Number series.
An adventure for [character levels] 8 to 16.