X-Men United (X-Men United #9)

BOW TO SUPERIOR POWER! EMMA FROST is used to being at the top of the pyramid. After all, that's where she belongs. But when someone arrives whose power is to be the better of any mutant she encounters... well, that simply can't be allowed. Yes, Justina LaGuardia, A.K.A. SUPERIOR, THE X-MAN THAT WASN'T, has operated in the shadows for too long, and now she's stepping into the sun... on a direct collision course with GRAYMATTER LANE!