Assertion: joker's story | /r/HasProperty | multi-part
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Source sentences:
text: In "Emperor Joker", a multi-part story throughout the Superman titles, the Joker steals Mister Mxyzptlk's reality altering power, becoming a nigh-omnipotent being, and remaking the entire world into a twisted caricature, with everyone in it stuck in a loop, repeating the same patterns over and over.