In 1975, Marvel published Giant-Size X-Men #1, written by Len Wein and penciled by the legendary Dave Cockrum. This issue introduced the "All-New, All-Different" X-Men, including Storm, Nightcrawler, Colossus, and Wolverine. This team was tasked with rescuing the original team (Cyclops, Marvel Girl, Iceman, Angel, and Beast).
“150 issues in the making. One second to destroy it all. The X-Men face their past—and the Phoenix’s final judgment. No one is ready for X-Men #38: CBR 150.” x men 38 cbr 150
While there is technically an X-Men Vol. 1 #38 (published in 1967, featuring the Banshee on the cover), the keyword is most often associated with the confusion surrounding the famous series. In 1975, Marvel published Giant-Size X-Men #1, written
—the secret origin records of the team's first alliance with the FBI. “150 issues in the making
The average weighted score converts to a Metacritic-equivalent of . In the absolute scoring system used by CBR (where 150 is a total "Impact Index" based on originality, art, and rarity), X-Men #38 ranks #150 of the top 1,000 Silver Age books – hence the "150" in your search.
Search over. Happy hunting, True Believer.
To understand the reference to "X-Men 38," we must first look at the history of Marvel’s Merry Mutants. For comic historians, the number 38 is significant primarily due to its proximity to one of the most important relaunches in comic book history.