That’s Silver Sorceress reaching out to the “weakest mind” . . . and Wally West’s Flash answering.
Poor old Flash never got much respect at that time.
Page by page, panel by panel annotations of DC Comics' summer events and crossovers
Dr Doom has faced the Challengers of the Unknown a couple of times, last in #783, and now the Atom’s come looking for revenge!
This was featured as a Behind the Scenes cover back in January.