Thorns are a type of glove used in Alderode to mark the best wrights in the country. They are distinct because of their red thumbs, pointers, and pinkies. Wrights considered advanced enough to qualify for thorns are legally required to wear them.
Pymary duels are common in Alderode the way gun and sword duels were once common in our own; however, because pymary is such a powerful art, it can be incredibly dangerous. Thorns are a way of setting apart an incredibly powerful wright so that nobody will unwittingly challenge him.