 Despite this, she uses Zatara to trap and ensnare the Phantom Stranger, preventing him from witnessing, and affecting, the supernatural origins of the Spectre.This, in turn, prevents Madame Xanadu from interfering, despite having foreseen the potential menace the unchecked Spectre would have brought on Earth.It is revealed that Xanadu's later behavior stems from this earlier fault, her magic parlor being devised as a way to control the supernatural being, ultimately hoping to restrain and quell his rage.