Translation of "automagical" into French

Automatic, but with an apparent element of stage magic. Commonly used in computer and other technology fields, referring to complex technical processes hidden from the view of users or operators. Includes a connotation of specialness and often implies pride on the part of the process creator (especially when the person using the word is the process creator). Sometimes, also used in sarcastic way, ironically implying an impossible process. [..]