This optional rule is especially fitting for natural fantasy stories, but it can be integrated into any campaign without any modification.
The module has four main goals:
The Core Rulebook already suggests that Game Masters include non-equipment items among rewards (see pages 264–265); forging materials follow those same rules and should be considered part of the session’s rewards. Each copy of a given material is a single-use item and has a value assigned by the GM (ideally between 500 and 3000 zenit).
Four level 12 Player Characters have defeated a colossal insect. An appropriate reward would amount to 1800 zenit in total, with no single item worth more than 1000 zenit. Since the group already recovered an *aegis gorgonis* (800 zenit; see Core Rulebook, page 283) shortly before the battle, the Game Master offers them a titan carapace (1000 zenit).
The Game Master is free to give materials any name and value, or use the table from page 78 onward to randomly generate them. The important thing to remember is that each material has to quite clearly inspire one or more possible uses.