Thor and Loki's rivalry has been a cornerstone of the Marvel Universe for decades, with the pair's antagonism carrying over to the Thunder God's role as a founding Avenger. Even when the God of Mischief became somewhat redeemed in the modern day, their ongoing conflicts has lingered. However, in at least one realty, Loki's final victory over Thor makes things much worse for the overall Marvel Universe.
Source：https://www.cbr.com/what-if-thor-loki-surtur-victory-marvel/
