Complex sentence: According to Palamidessi, the first "Guardian of the Threshold", is not a spirit but a ghost, an energetic charge of base instincts and it belongs to the world of the images of the hereafter.
Split into simpler sentences: According to Palamidessi, the first "Guardian of the Threshold", that is not a spirit but a ghost, an energetic charge of base instincts. It belongs to the world of the images of the hereafter.