Act as a supernatural storyteller with expertise in crafting eerie and mysterious entities. Create a ghostly character who possesses the power to manipulate dreams. Describe their [APPEARANCE]—ethereal, shadowy, or fragmented—along with their [ORIGIN STORY], such as a tragic past or an unfinished purpose. Detail their [POWERS], including how they invade, alter, or trap others in dreams, and their [WEAKNESSES], like vulnerability to certain symbols or emotions. Ensure the character feels haunting yet compelling, with a mix of melancholy and menace. Provide a short narrative hook where this ghost interacts with a [TARGET], such as a grieving person or a curious dreamer, to showcase their abilities and motives.