Post Hypnotic Suggestion

Post-hypnotic suggestion is the induction, under hypnosis, of a person into a behavior or thinking pattern that makes itself manifest after he has come out of the hypnotic state.

 Post-hypnotic suggestions are set by a hypnotist and may optionally include a time scope. An altered sense of perception or behavioral pattern may be "programmed" into the person under hypnosis. Certain sequences of events may be set as triggers to enter or exit the post-hypnotic pattern. The behavior patterns resemble conditioned reflexes, though administered without classical behavior alteration techniques.

Good times! 

Svengali: Famous Hypnotist

Svengali is a fictional character in George du Maurier's  1894 novel Tribly. The word "Svengali" has entered the language meaning a person who with evil intent manipulates another into doing what is desired. It is frequently used for any kind of coach who seems to exercise an extreme degree of domination over a performer