Eyebite

This unusual castle is home to one who calls himself simply “Shiner.” Shiner is a wizard who shuns all contacts, ignoring others in the vicinity unless they approach his castle, when its special defense may be called forth to repel unwanted intruders. Twice per day, the twin towers of the castle can shine with a brilliant, golden light which blinds all those outside its walls within 400 yards for turns and has a chance of causing permanent blindness (save versus spell negates both effects). houses a force of human cavalry of unknown numbers (but at least 40 strong) of chain-clad warriors on barded heavy warhorses.

The castle seems to be entirely self-sufficient, for no one ever ventures forth to purchase food or equipment, or for any other reason. Nenshen of Narwell is known to be very desirous of contacting Shiner to ensure an active role for this strategically crucial location in time of war, but his approaches have been cursorily rebuffed to date.