X-Men Legacy #300 was the end of an era. The capstone to the second volume of X-Men that had begun back in 1991 with Chris Claremont and Jim Lee, though it was specifically a celebration of the series when it had the X-Men Legacy moniker. Through “Marvel Legacy math”, this anniversary issue included the 24 issues of the second volume of X-Men Legacy, but not any enumeration from volumes three (the vampires) or four (the all-woman team) of the adjectiveless X-Men series. So it stuck with creators most emblematic of the X-Men Legacy era itself to tell this jam issue.