Return to the past... now!
—Jeremy, Code Lyoko
In any story worth the tellin', that knows about the way of the world, the third wish is the one that undoes the harm the first two wishes caused.
— Granny Weatherwax, A Hat Full of Sky
And the University had been rebuilt, or had rebuilt itself, or in some strange way had never been unbuilt; every strand of ivy, every rotting casement, was back in place. The sourcerer had offered to replace everything as good as new, all wood sparkling, all stone unstained, but the Librarian had been very firm on the subject. He wanted everything replaced as good as old.
If you think about it, Spider-Man not only made a deal with the devil, he came out of it pretty damn good! He gets his aunt saved, his buddy comes back to life, his identity is secure, he still gets to have had a long-term relationship with a damn supermodel back then, and fool around with kinky sex-addicted catgirls now.
So every piece of character development they ever did with Lex on this show? Gone. Worthless. No sir, officer. Never seen it before in my life.