Onyx the Fortuitous and the Talisman of Souls

Marcus J. Trillbury, an amateur occultist known as Onyx the Fortuitous, is in the middle of an existential crisis. He feels misunderstood by his family and friends. But his life changes when he receives an invitation to visit the mansion of Bartok the Great, a black magic guru who wants to resurrect an ancestral demon. A horror comedy with a 1980s aftertaste and traditional special effects screened at Sundance.