Showcase #82 (On Sale: March 13, 1969) has a cover featuring Nightmaster by Joe Kubert. It also has added "Preview" to the appellation and a large DC logo. The irony of this is that this is one of the few three-issue tryouts that never went anywhere. And yeah, before there was a Conan comic at Marvel, DC tried sword and sorcery.
"Some Forbidden Fate" is by Denny O'Neil, Jerry Grandenetti and Dick Giordano. Thousands of years ago, the mighty warrior Nacht was driven from his other-dimensional world of Myrra by his rival Brom and the evil magician Farben. While Nacht's magic Nightsword inserted itself into a stone pillar, Nacht himself ended up on Earth where he settled down under his family name of Roke.
In 1969, Jim Rook, lead singer of the rock band called the Electrics, entered an abandoned store on Manhattan named Oblivion, Inc. and is magically transported to Myrra. One of Nacht's descendants, Rook reluctantly claimed his ancestor's Sword and became the new protector of Myrra – the Nightmaster. Although Rook really wantd to return to Earth, he finds himself in the midst on the conflict between Myrra's King Zolto and the evil Warlocks, when the Warlocks captures Rook's girlfriend, Janet Jones.
Edited by Murray Boltinoff.