This quest is in the Elona+ mod of Elona. From: Mary the insect master in the Sacred Library of Irva, on the Lost Irva continent. She is in the lower right corner of the library. Reward: 3 potions of descent, 2 scrolls of gain attribute, griffon scale material kit, and 5000 music tickets. After quest completion, Aribel the white arms will appear in the library. This quest, although doable in the English version, has not yet been translated as of Elona+ version 1.53. As a result, the menus and journal are of no help. You need to do the following: