Alexios IV's Oil Lamp

Origin
Alexios IV Angelos was Byzantine emperor from August 1203 to January 1204. He began life as an exiled prince and returned to try and broker peace between the Crusaders and Byzantines. He promised to provide 200,000 silver marks and soldiers to help continue their campaigns, but was unable to do so. The royal treasuries did not contain enough to fulfill their agreement. Meanwhile, his blinded father Isaac II spread rumors about his inability to lead, worsening relations with his people. They began violently attacking any foreigners and in January 1204, Alexios IV retaliated against the Crusaders by setting fire to 17 ships filled with inflammable materials, but the attempt failed. The people supported a new rival as emperor and Alexios was deposed from power.

Effects
So long as the lamp is lit, a stream of fiery knights will be created that will follow the will of the user. The longer the lamp burns, however, the more uncontrollable the knights become.