The Curse of the Adventurer's Book
Tasha, the Tavernkeep at the Unicorn Tavern, discovered an old Adventure book given to her by the infamous pirate Briggsy as a child. She decided to follow the instructions in the book on whim one night, and returned with a treasure chest.
The following morning she discovered that her hand had begun to turn skeletal, indicating that she had somehow been cursed. From that point, she attempted to conceal her hand from any visitors to the Tavern.