New Mutants #100 - (CGC 9.4)
Marvel Comics, 4/91

Fabian Nicieza story
Rob Liefeld cover & art

1st appearance of X-Force
1st full appearance of Shatterstar.
Last issue.

Part of the Beginning of the End arc

"Later in the infirmary, the man introduces himself as Shatterstar, traveling back in time to enlist the X-Men's help in defeating Mojo and Spiral. The team is then attacked by Imperial Protectorates sent to kill Shatterstar however, they are all killed."

"Elsewhere, Stryfe returns to his troops, the Mutant Liberation Front, dispatching a small task force to do some damage. After that, he thinks about the coming war, which is going slower than he would like. He takes off his helmet, and is revealed to be… Cable?!"