A long time ago, a group of DreamSeers decided they needed new students, to not carry on their knowledge but to discover things they knew nothing of. Much to their dismay, the newly awakened were often rude, callow and misbehaved. It would not be unheard of to hear a student whispering to a friend playing games while the instructor was not listening. For that reason, the Art of Chamele was invented. The. Teacher, could actually have a proctor teach the class, and Chamele and stand in the back of the room. When students would start to act up, the Chameled Teacher would motion to the proctor to wave their hands frantically, as if casting an Art. The instructor would walk over to the troublemaker and give them a harsh smack on the back of their neck with a ruler. The student, not seeing the Teacher, would assume the proctor has some supernatural power and would not make the same mistake again. From that point on, students became much more behaved, more so that other focuses, like GateKeepers............to be continued.
Version Two
The Art of Chamele was created by the Dreamwright Jervais, who was mostly an anti-socialite. However, due to his sphere, and status in the Dream, he constantly searched for ways to avoid his compatriots. One day, he found that shadows would almost completely hide a Dreamer, if he does not move too much. Also, he discovered that any sudden movement, such as that created by an attack, or aggressive motion would cancel the concealment. Thus, he began probing the properties of shadows, and after some botched research (his left arm was never visible again), he finished the Art of Chamele. The Art is known to twist the shadows about oneself, and to partially "wrap" light around the Dreamer, so that any observer will think the space empty. Giggling, he taught it to his students, who were mystified that their teacher could not be seen and was never seen again. We're all very sure he's still out there, somewhere.