Finally getting a chance to run this game and came across a rules question that could use clarifcation. The Witch's Iron-Willed move states that the resulting Iron Focus 'Can only be used for a single spell' but then says 'using this MAY warp, break or destroy the item'.
So does this mean;
A) You have to define what the intended function of the Iron Focus is at time of creation and it cannot be used for any other effects AND it's likely to break after a few uses
OR
B) You can use an Iron Focus exactly once and then it's done, with a high chance of it becoming broken in the process so youll need to source another Focus-worthy material to make a new Iron Focus