To learn about sorcery, or black magic, or about similar arts in a dream means innovation and heedlessness.
(Also Magician; Sorcery; Spit out)... magic arts dream meaning
If he uses an apple in his illusion in the dream, it means that he will seduce his own son.
If he uses a butterfly in his performance in the dream, it means that he will rape his own wife.
(Also see Magic arts; Sorcery; Spit out)... magician dream meaning