User blog comment:SayuriDarling/The House of Hades Official Discussion/@comment-24067344-20131022173322/@comment-24065371-20131023203508

He may not need a source but it has not been shown that he can work without one without catacylism effects, it is more likely that nico can incinerate people with black fire but since it has not been shown or stated that he could work without one (bar a threat that he did not require a source after the fight with jason which is not clarified as to why he does not it seems more an empty threat or a reference to his better sword fighting) it cannot be a factor in the most powerful