"'Are you mad", 'No, though the same cannot be said for the bastard in my dreams who gave this to me.'" -A conversation between Gorrik Donario and Wenron Red-Eye.
The Eye of Madness is an Artifact created by Tywyll, the Spirit of the Descent, taking the form of a purple jewel cased in a runed Redsteel frame. It acts as a lens, and bestows the user with the ability to see everything, regardless of light, including magic, the truth behind illusions, life, thoughts, true forms, etc, the primary limitation being walls thicker than 1 ft. The Eye, when looked through, will also show illusions to the user, existing as the same things that could be seen as truths as listed above. It is impossible to distinguish illusion from reality when looking through the Eye.