Of course, the two teams must fight before they team up. It's a rule.
Yowtch! That'll get your attention, being on the business end of a Super Hissy Fit. Everybody stops dancing.
Zatanna is an insanely powerful sorceress who casts her spells by saying them with the words backwards but the word order forwards. This would be hard. She basically has to come up with a backwards freestyle rap on the spot. Sure, Zatanna would have some of her more common spells memorized, like "Nrut snug ot oop!" or "Nummos azzip!" But what about those one-off situations, scenarios where you have to come up with some fresh backwards lyrics on the fly? You try pronouncing the word "meteor" backwards while a huge flaming space rock is bearing down on you. Zatanna has to trust in her freestyle skills and just flow. She rules, although I prefer the top hat and fishnets look.
The story continues in the pages of All-Star Squadron. Will Per Degaton make the Allied forces of WWII surrender before the threat of nuclear annhilation? Or will the combined might of our heroes kick that ginger-haired bastard's ass back into the time stream?
While the interior pages of this comic by the legendary Don Heck (no relation to Dick Hell) may not live up to the promise of the Perez cover, Justice League of America #208 still delivers wall-to-wall superhero goodness in the mighty DC manner. Dna s'taht on eil!