Val then spun his fingers and drew a Circle of Air on the cover of the book. Adrien gasped; since he could no longer perceive its weight, he thought he'd just dropped the book on the floor - he jerked downwards as if to catch it, and then realized that his hands were indeed still gripping on its sides. Adrien tried to lift the book up and his arms sprung up, finding no resistance - he almost knocked his jaw with the book's cover. It was as if Val had turned the book into an empty cardboard box fashioned in the shape of a book.
"Wow", Adrien laughed. "That felt weird". He cautiously bounced the book in his hand. "So that's Air magic... It's really useful", he said.
"That is why I am having you learn this as your first application", Val smiled. "Let us continue this in the practice tower".