Lorophage demon

This species of demon has hibernation cycles, they sleep for decades and then wake up to feed themselves when "the stars of the old ones who birthed them align". The Lorophage can possibly cause an epidemic of madness after they've awaken and fed because of their abilties.

Powers and Abilities
A Lorophage Demon uses its proboscis and needle-like fingers to draw any sustenance from the minds of its victims which is a fatal process. The creature feeds on its victims traumatic experiences and the victims go completely mad from all the traumatic experiences that are forced to the surface. The Lorophage demons prefer to drain every drop of their victims' brains and by that they kill them, but very rarely and only when the attack has been interrupted do they leave their victims alive but completely insane. Lorophage demons are resistant to magic but not to hypnosis.