New Mutants Origins: Magik - Magik Mini Series #4

Magik #3
Chris Claremont
Sal Buscema

Illyana is alone, Storm is dying in her arms, Cat is dead, and the X-men are dead. What will she do alone against the Dark Lord Belasco?

Uncanny X-men Omnibus volume 3 is available at most bookstores, ebay, and amazon.

https://www.amazon.com/Uncanny-X-Men-Omnibus-Vol/dp/078519922