The world it came from
Iceland after the Reformation was a Danish-ruled, desperately poor, Lutheran farming society of some fifty thousand people scattered around a volcanic coast. Books were scarce and precious; magical staves were copied by farmers, priests' sons and students into small handwritten books passed between households. Between 1625 and 1685 Iceland burned roughly twenty-five people for sorcery, nearly all of them men, and the evidence was usually a drawn stave. This is the culture that produced the Vegvísir: literate, Christian, hungry, and quietly retaining a magical technology the church forbade.