Jotunheim (Earth-6531)

Jotunheim is a part of the Nine Realms and the homeworld of the Frost Giants. Ever since the Casket of Ancient Winters was stolen from the Jotuns by the Asgardians following the Twilight War, the planet has been deteriorating duo to the lack of magic provided from the artifact. Laufey was the king of Jotunheim, before his death at the hands of his son, Loki.

History
Jotunheim entered in war against Asgard in 965 BCE, and during this time the Asgardians would reach the world, where Odin fought against Laufey. Winning, but at the cost of his eye, Odin and Laufey signed for peace, with Odin taking the Casket of Ancient Winters, which made Jotunheim a flourished world, as well as Laufey's baby son, Loki, whom he had abandoned to die.