Theft of the Witch's Handbook

Exploration Stage: Emperor's Palace
From: Martha
Description: It's a catastrophe! I woke up from a trance today and several of my most powerful witch's handbooks were missing. They are a series of black curses that bring sorrow and death. Please, get them back before they fall into the wrong hands.
Completed: Ah, the heavenly sphere, the book has returned unharmed. I'm so glad you got it back before the evil forces that stole it destroyed the city. I offer you this item! My celestial spirit whispered to me that this is invaluable to you.