Treasure!
“Aha!” cries the crone, cackling in delight. “My grandmother foretold that an event organiser would wander these lands and require my aid. I have what ye seek.” She removes a silver chain from around her neck and opens a locket to reveal a crystal. She offers it to you and you take it, thanking her profusely.
Etched into the crystal is the prophecy you’ve been seeking.