Richard Wagner's The Ring of the Nibelung

Richard Wagner's Ring of the Nibelung is a fast and easy-to-learn card game based on norse myth and Wagner's opera. Siegfried, Brunhilde the valkyrie, Fafner the Dragon and even the Gods from Valhalla will join the fight! Players take the role of great lords of the north trying to get Alberich's Ring. But, alas, the Ring comes with a terrible curse that destroys anyone who wears it for too long! In your turn you take a character either form Midgard (the main deck) or from your hand and then, you put him (or her) in your Great Hall. A Great Hall can contain up to six characters. Heroes and villains can kill each other or even fall in love, changing greatly how the Great Halls look. Also, each character has a "Ring" value that allows you to take the mighty Ring from whoever is wearing it right now. Having the Ring allows you to take treasures. Treasure cards may give you victory points or, even better, old artifacts with amazing powers. But beware!! If the curse affects you, you will lose a treasure and one of your own characters will die. You can, however, give up the ring before this happens. —description from the designer