X-Men Annual (1970) #5

The X-Men versus the hordes of the Badoon! When a galactic threat looms over the merry mutants, the team calls in the aid of experts- the Fantastic Four! Meanwhile, Storm can’t shake her feelings for Arkon, and her need to end the battles in his home world. Can the X-Men and the Fantastic Four usher in an age of peace between two warring alien races?