Alright so i just made this up right on the spot so it might be corny haha
An ancient relic has just been uncovered in the Thorium mountains. The relic is said to be from the ancient Naz'decka, an old magical human tribe. Many want the relic, for the untold powers it may have, but also by uncovering the relic, anyone who touches always ends up disappearing, for exactly a week, before reappearing completely insane. Are the ancient Naz'decka returning? or are there even darker magics at play.
Hows that sound?