Book of Clouds

Description
The Book of Cloubs is a blue book used by fortunetellers as a way of looking into the future. Aunt Wu uses the book to make predictions. Looking at the sky, she compares the shapes that she sees to the ones recorded in the book.

In the episode "The Fortuneteller," Aang asks Meng to give him the book. With the book, Aang and Katara bend the clouds to form a warning for the village of Makapu.