Skyrim has a specific reference to the legendary sword Excalibur that could make a return in The Elder Scrolls 6, albeit in a different light. Since Skyrim itself is the story of an epic quest, it makes sense that it would reference one of the most widely-known legends in fiction. While players can't find Excalibur itself in the game, the easter egg can be picked up on by players who are familiar with the stories about the sword. If The Elder Scrolls 6 ends up making a return trip to Skyrim, the easter egg could return as well.