As player moves

Write a detailed description (as per the previous page). Then write a custom player move to reflect how the artifact works or what PCs can do with it.

Custom moves are a great way to reflect artifacts with magical powers, especially ones that are unpredictable, unreliable, or dangerous. See Writing moves for guidance on writing custom moves.

You'll find examples of such artifacts all through Book II. See bloodshot amber, a crystal knife, and a black menhir for a sense of what's possible.