Uncanny X-Men (1963) #280
Xavier enters Muir Island and discovers both the X-Factor and the free X-Men are being held in a telekinetic force by Legion!
Stories
penciler
Andy Kubert
letterer
Tom Orzechowski
colorist
Joe Rosas
penciler
Steve Butler
letterer
Lois Buhalis
writer
Fabian Nicieza