Game of Thrones(ASOIAF): The Sorcerer Prince

Harry Potter x Game of Thrones crossover. An adult Harry Potter dies during an experiment but his soul finds a new host in a very distant world. After experiencing death for countless years, Harry wakes up in the body of Joffrey Baratheon. Now he has to navigate this unknown world with strange magic while trying to figure out how to best use his new resources to accomplish his goals. It is a Game of Thrones fic so expect plenty of nudity and violence. This fic will have 18+ scenes, but they will be properly tagged so can skip them if you wish to. — Description from novelcodex.org