Chekhov’s gun is a literary technique in which a seemingly insignificant element is introduced early in a story and later becomes crucial to the plot. It is named for famed Russian dramatist Anton Chekhov, who felt strongly that any object introduced in a story must be used, or it should not be featured in the first place. The technique has remained popular and is widely used in modern literature, film, and television. What popular fantasy novels frequently feature this plot device? Discuss