Maqudh al Nishadina tells you, "Do you wield the Silifi of Crimson Stars? Would you like to wield a Silifi like mine? If so, I can help you improve the weapon, to add the Critical Strike ability and Lightning Cleaving properties to it... Yes, I have a way of repairing one of the damaged jewel settings. But my method demands a very particular ruby... Never mind that for now. If you wish to start on the path to improving your Silifi, you must first bring me a Plate Armoredillo Spine. Do not trouble me with the specifics. Just bring me a spine.