X-Men #130 [Newsstand]-Good (1.8 – 3) 1st Appearance of Dazzler.

The Dark Phoenix Saga: Part 2 of 9 - "Dazzler!" Wolverine, Colossus, and Storm have been taken captive by the sultry and dangerous White Queen, but for what purpose. Only the young new mutant Kitty Pryde can warn the rest of the team, but will she be in time to save her new friends? Meanwhile, Cyclops and Phoenix encounter another "new mutant" called Dazzler. Plus, Jason Wyngarde continues his mental seduction of Jean Grey.
(NOTE: The Dark Phoenix Saga Part 2;
1st appearance of Dazzler;
2nd appearance of Kitty Pryde;
2nd appearance of Emma Frost;
1st full appearance of Sebastian Shaw, the Black King;
Jean Grey becomes the Black Queen of the Hellfire Club).