HAHAHAHAHAHAAH!!!!!!!!!!!!!!!!!!!!!!!!!! insane laughter and jokes are heard in gotham city, the oker and the mask are in for the fights of their lives! so who wins?
for the first 20 seconds which is about how long the fight would last. 'course, could last even less if joker starts being a smartass which he always is, and annoys the mask.
i dont think even spectre could permanatly get rid of the mask and if the right guy wielded it he might take out spectre its like the will thing with the GL rings if the right guy wields it like this one GL who was so good he was beating Parallax so bad Hal had to remove himself from Parallax and let the entity have no restraints. When lobo had the mask he slaughtered whole galaxies