👉 Sidhe, in Norse mythology, is a type of supernatural entity that appears to humans as an undead spirit or ghost. They are often depicted as being capable of performing various magical and supernatural feats, such as summoning demons or other entities from the afterlife. In traditional belief, Sidhe were thought to be responsible for the spirits of dead people who had been reborn into a new life in another realm or world. These spirits could manifest as undead creatures or spirits, often with their own unique