魔法書販売人ルーク:
Excellent, you've gathered the Giants' Experimental Tool Fragments I need. Now take this fully operational Giant's Experimental Tool.
If you fight the monsters while this tool is in your inventory, the traitors will appear, as they are drawn to the tool.
Defeat them and bring me 3 research papers concerning the Giants' technology...
The Giants' Experimental Tools are easily broken, so you had better be sure to carry a sufficient number of them.