The Shadowfell is a location in Baldur's Gate 3 that players can enter, but the optimal timing of this action is unclear. Some reports suggest considering entry before completing other tasks, such as the Moonrise Towers or certain quests, while others provide guidance on preparation and removal of a shadow curse beforehand. The Shadowfell appears to be connected to characters like Shadowheart and Nightsong, who are featured in various guides and cosplay.