"The witch has a magical mirror."
Translation:Die Hexe hat einen magischen Spiegel.
Why is mirror plural~!! Thw witch as A magic mirror, right? Die Hexe hat eine magische Spiegel. One mirror, not mirrors.
Spiegel is singular here, but it is masculine, so in the accusative case, "ein" (masculine indefinite singular) becomes "einen". As the article is "einen", the adjective after must agree, so -en is added to "magisch".