Here's the beginning blurb:
Crafting Treasures should be just this side of impossible,
incredibly difficult to do but still within the reach of players’
characters. Players who want their characters to craft deadly,
powerful Treasures may work with their Storytellers to determine
what unique materials are required and what special abilities
(if any) the item will have once it’s crafted. Alternatively, the
Storyteller may choose to make acquiring the required components
as revelatory quests all on their own, and the true power
of the Treasure a mystery until the crafting concludes.
System: The Treasure’s creation requires an equal number of
mystical components as its level in an Art. Therefore, a crafter
who wishes to build a trumpet that when played, alters a listener
into the form of an animal, would need three components to
manifest the third level of the Metamorphosis Art.
The time it takes to acquire the components for such a
Treasure’s construction enhances the Treasure’s natural Glamour,
meaning the crafter herself does not need to possess the
Art used in its construction. The Treasure itself manifests the
sought-after Art, once its components are in place after a successful
crafting roll (see Crafting on p. 317).
Each use of a crafted Treasure’s Art requires the roll associated
with the Art’s level, where applicable.