The mastermind reveals himself - the oldest of Doctor Strange's foes...Nightmare!
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(Cover Date: July, 1969)
Summary: Nightmare is holding Eternity as his prisoner. In order to save Earth from the menances pulled from across time, Strange agrees to go to Nightmare's Dream Dimension. After Strange fights off his minions, Nightmare uses a counterspell to turn his own Eye of Agamotto against him.