What new items have been added to the game recently and how have they changed the gameplay?

At the beginning of each year, Riot Games conducts a major game overhaul. Before the start of the 2024 season, the developers completely removed mythic artifacts and instead added a couple of dozen new items, including Hubris, Terminus, and Sundered Sky. You can watch an overview of these items here: https://www.youtube.com/watch?v=ZeUp8Mv2M10