>>149327348
Just start reading with claremont's X-Men run, it'll be obvious when to read Magik's original limited run, then continue until pretty much the end of his run with the Inferno storyline

from there there's a bunch of x-men without Magik, if you haven't already read through it you have;
Grant Morrison's New X-Men
Wedon's Astonishing X-Men
House of M
Messiah Complex
Messiah War
Second Coming
Schism
Bendis X-Men (actually has Magik)

Beyond that there's Krakoa era X-Men where you would want to read New Mutant

The current era is From the Ashes where for most magik content you want to read;
(Adjectiveless) X-Men
& her Solo series