The term déjà vu is French and means, literally, "already seen." Those who have experienced the feeling describe it as an overwhelming sense of familiarity with something that shouldn't be familiar at all.
Déjà vu is a show.
He become a magician, a mentalist and an illusionist.
As a magician, he conjures something from nothing. As a mentalist, he explores the complexity of the human mind. As an illusionist, he performs miracles and wonders.