Hearthstone’s next expansion, Journey to Un’Goro, is going to herald some pretty big changes when it comes in early April. Not only will it introduce 135 new cards to the game, but it also ties into the next Standard rotation for the game. What does that mean? It means the sets of cards that are played in Hearthstone’s Standard format will change, and we’ll say goodbye to Blackrock Mountain, The Grand Tournament and League of Explorers. Everything will be turned upside down, in other words, and new decks and strategies will emerge, while old archetypes get refined.