Marvel Super-Heroes Vol 1 #17 Thor the terrorist known as Magneto

the terrorist known as Magneto lauches his greatest assault on the human race

The arrive of Sentinels and Bolivar Trask final sacrifice (issues #14

Death swears to give one million years of life more to Earth's Sun and then chooses Vanguard

Every living being on Earth is now held in suspended animation - and they'll remain that way unless Marvel's super heroes agree to take part in the "contest"

and unfortunately that made Jean become the Phoenix ( issue #101)

Marvel Super-Heroes Vol 1 #17 Thor the terrorist known as MagnetoDane Whitman is harboring doubts about his super hero identity, Black Knight. After encountering the spirit of Sir Percy of Scandia, Whitman realizes that he may be a worthy possessor of the title after all.