Oh man, I love this so much. In the late 70's and early 80's DC just knew how to pile in the characters in their comics. The more spandex on the page, the better it was. The anthology books like World's Finest or Adventure Comics would do this both by filling the books with multiple stories but then filling the stories with so many characters. Team-ups and crossovers were the norm. Team-up books like DC Comics Presents and The Brave and the Bold used tentpole guys like Superman and Batman to showcase their lesser known heroes, but since every other book had a multitude of capes teaming up, and not to forget back-up features, new characters (and new iterations of old characters) could be introduced and used all over the place.
But I like this the best, just a random assembly of characters fighting over a Maguffin. Captain Comet and Kid Flash versus the Funky Flashman, Star Sapphire, Gorilla Grodd, Copperhead and the Trickster. Thats some deep DC cuts right there. So awesome.
Art by the great Rich Buckler (later of my favourite Blue Ribbon/Red Circle/Archie Adventure Heroes comics) and story from one of the best of the era, Gerry Conway (Conway is like a Dan Slott or Fred Van Lente of today, not super high profile but a great genre writer and much liked).
I need more of this.