there is a desert temple of a lost ancient civilization. The nameless kingdom ruled by the Nameless one. He wielded an orb that controlled all of the undead. You are an adventurer looking for said artifact. You reach the inner chambers and find it. But when you grab it your flesh melts off making you a living skeleton. The orb starts whispering

rise… new lord of the undead…

a robe constricts around you and a crown is forcefully planted on your head. You cannot leave the temple anymore…