Starting in Wonder Woman vol. 2 #51, the Amazons, who had revealed their presence to the world in Wonder Woman vol. 2 #50, are blamed for a series of murders and for the theft of various artifacts. The Amazons are then taken into custody, Queen Hippolyta is nowhere to be found and Steve Trevor is forced by General Yedziniak to attack Themyscira. These events lead to the "War of the Gods" occurring. The culprit of the murders, thefts and the framing of the Amazons is revealed to be the witch Circe, who "kills" Diana by reverting her form back into the clay she was born from. Later, Wonder Woman is brought back to life and together with Donna Troy, battles Circe and ultimately defeats her. Circe would later return by unknown means.
Wonder Woman was taken to Zamaron where the Star Sapphires informed her that a Dark God had taken hold there, too. Diana fought the newly-emerged Karnell, Dark God of Love, who informed Diana that he and his brethren had come from the Dark Multiverse, which the Justice League had recently encountered. When Diana wore the Tenth Metal during the climax of the Justice League's battle with Barbatos, Diana had wished for the gods' return. Though she had meant the Gods of Olympus, the Dark Multiverse's gods were chosen instead, and thus she had unintentionally caused their invasion. Together with the Star Sapphire Corps, Wonder Woman was able to defeat Karnell, who retreated back to Earth. Wonder Woman left the Corps and returned home. In her absence, Jason had united with the Justice League and fought the Dark Gods, who had plunged Earth into chaos. Suddenly, the Dark Gods disappeared, only for them to return with Jason at their side. Jason fought Wonder Woman, but after he led her away from the Dark Gods, he revealed that he was using his armor to channel the power of Dolos, God of Deception, and was in fact deceiving the Dark Gods. Using the wisdom of Athena, Jason developed a plan to convince the Dark Gods to retreat back to their reality. He offered himself, along with the power of the Greek Pantheon, in exchange for the Dark Gods leaving Earth. The Dark Gods accepted the proposal and Diana tearfully said goodbye to her brother, who was taken with them to the Dark Multiverse. The planet was saved and its people returned to normal, but Diana was distraught over the loss of her brother.
Wonder Woman (vol. 1) #179 (Nov. 1969) showed Wonder Woman giving up her powers and returning her costume and title to her mother, in order to continue staying in Man's World. The reason behind this was that all the Amazons were shifting to another dimension, but Diana was unable to accompany them as she needed to stay behind to help Steve, who had been wrongly convicted. Thus, she no longer held the title of Wonder Woman and after meeting and training under a blind martial arts mentor I-Ching, Diana resumed crime fighting as the powerless Diana Prince. She ran a mod-boutique as a business and dressed in a series of jumpsuits while fighting crime. During this period, Samuel R. Delany took over scripting duties with issue #202. Delany was initially supposed to write a six-issue story arc, which would culminate in a battle over an abortion clinic, but Delany was removed reportedly due to criticism from Gloria Steinem, who, not knowing the content of the issues Delany was writing, was upset that Wonder Woman had lost her powers and was no longer wearing her traditional costume.
In an October 25, 1940, interview with the Family Circle magazine, William Moulton Marston discussed the unfulfilled potential of the comic book medium. This article caught the attention of comics publisher Max Gaines, who hired Marston as an educational consultant for National Periodicals and All-American Publications, two of the companies that would merge to form DC Comics. At that time, Marston wanted to create his own new superhero; Marston's wife and fellow psychologist Elizabeth suggested to him that it should be a woman:
After Sekowsky's run ended in the early 1970s, Diana's roots were reverted to her old mythological ones and she wore a more modernized version of her original outfit, a predecessor to her "bathing suit" outfit. Later, in 1976, her glowing white belt was turned into a yellow one. For Series 3, artist Terry Dodson redrew her outfit as a strapless swimsuit.
With a new decade arriving, DC president Jenette Kahn ordered a revamp in Wonder Woman's appearance. Artist Milton Glaser, who also designed the "bullet" logo adopted by DC in 1977, created a stylized "WW" emblem that evoked and replaced the eagle in her bodice and debuted in 1982. The emblem in turn was incorporated by studio letterer Todd Klein onto the monthly title's logo, which lasted for a year and a half before being replaced by a version from Glaser's studio. With sales of the title continuing to decline in 1985 (despite an unpublished revamp that was solicited), the series was canceled and ended in issue #329 (February 1986) written by Gerry Conway, depicting Steve Trevor's marriage to Wonder Woman.