The Ancient One; Dr. Strange; Hamir (unnamed); Baron Mordo
Desperate to learn the secret of Eternity, Dr. Strange probes into the unconscious mind of The Ancient One, meeting one deadly trap after another, until at last, he reaches the mind of his beloved Master, and convinces him of his identity and good intentions. After recovering, Strange departs, and high atop a Himalayan peak, recites "one of the most potent spells of all time". When he's finished, his amulet floats into the air, expands in size, and a doorway opens thru which Strange steps. Seconds after the amulet vanishes, Mordo appears, just barely too late to catch up with his mortal enemy.