Dr. Satan Versus Black Magic (1968)

aka’s: Dr. Satán L La Magia Negra/Dr. Satan Vs. Black Magic/Doctor Satan Versus Black Magic

In hell, the King Demon orders Dr. Satan (Joaquín Cordero) to return to Earth to destroy Yei Lin (Noé Murayama), a powerful wizard of black magic, and steal the formula that transforms all metals into gold in order to become the master of the world. Also stars Sonia Furió. Also with Luz María Aguilar. (In Spanish language, with English subtitles).