Eye of Horus Romans that an evil heart could get to the eye. The thought to be powerful effects of eyes and optics created the myth that the energy-producing power of they eye had the ability to cast evil spells with just a glance. Because the ancients believed the evil eye could be counteracted with a 'good eye', myths about Horus arose. In one myth, when Set and Horus were fighting for the throne after Osiris's death, Set gouged out Horus's left eye. The majority of the eye was restored by either Hathor or Thoth. When Horus's eye was recovered, he offered it
The Horus Heresy (novels) Heresy and "Warhammer 40,000" canons; still other non-series Horus Heresy material has been eventually incorporated into the work. A significant development was the 2012 initial release of the "Horus Heresy" miniatures wargame expansion, which repositioned the concept as a foreground element within the "Warhammer 40,000" gaming system while highlighting the importance of the Horus Heresy to Games Workshop's product lineup and the related universe. The expansion is reputedly developed in coordination with the book series, and includes new material and information about the Horus Heresy and the fictional universe; it joins the series and other works as an authoritative source