Keith Giffen does his first work for DC in All-Star Comics 60 (May/June 1976), joining Conway and Wood as they introduce a new villain for the team.
The story begins with Flash and Power Girl having a race. They clearly enjoy racing, as they will do it an awful lot. Star-Spangled Kid and Wildcat are also at the headquarters, complaining about being bored.
That doesn't last too long, as the glowing, axe-wielding Vulcan bursts in, trying to kill them all, despite the heroes having no idea who this guy is.
Alan Scott gets a bit of development. He is still running Gotham Broadcasting, which is not doing well in a recession. As Green Lantern he has been searching for the Harlequin, and we see that Molly Mayne is no longer his secretary/assistant, which might be why he finds it so hard to locate her. Kent Nelson shows up, and in the most Giffen touch of the issue changes into Dr. Fate.
Fate explains to Green Lantern how astronaut Christopher Pike was sent on a mission to the Sun, the mission itself being named Vulcan. The probe went out of control, plunging towards the Sun, at which point it sort of melted and bonded with Pike, who has returned, soaking up all the energy he can as Vulcan. After drawing energy from the other Society members and setting their base on fire, Vulcan gets confronted by Dr. Fate and Green Lantern.
The story continues in the next issue.