Yeah, Sublime was disguised as the mutant power-boosting drug “kick” that turned Magneto back into a genocidal supremacist.
Which is why I never understood the so unnecessary Xorn confusion and bullshyt that traveled from Chuck Austen’s diarrhea-dipped pen into a god awfully underwhelming Bendis reveal in the pages of New Avengers.
There was no need for the stupid retcon. There was a perfectly good reason for Magneto to go psycho, he was infected and hijacked by an all-powerful ancient sentient bacteria!
All they had to do was come up with a reason to bring him back to life, which has been done before 347866777532296545 times in comics.
Instead they just said “Oh yeah that epic Magneto story you just read? That wasn’t really Magneto.”