Krull

From the rulebook:

"You and your opponents are battling to save Princess Lyssa from the Beast. (He's taken her from Prince Colwyn and carried her off to the Black Fortress!) You must capture the Glaive card. Don't let opponents take it from you! And locate the Black Fortress card, while keeping its whereabouts a secret from others. Once you have the Glaive and can expose the Black Fortress, battle the Beast and try to rescue the Princess. Defeat the Beast and you're winner!"

Based on the movie of the same name