Spinthir is a Tinkatuff Runecrafter Artificer. This is not an existing class, this is something I came up with myself because nobody can stop me. Why isn't there a Rune Artificer? Runes are a Magic and a Craftsmanship but also Runes can be used as words so what if you could chain runes together to create more complicated magical effects? Like you could string together a Rune that means Protection and a Rune for Fire and make a Protection from Fire effect. String enough Runes together and you are like a Magic Programmer which feels very Artificer to me.

Spinthir is one of the possible root words for the Gemstone Spinel meaning "Spark". It seems appropriate for someone who works in a forge. Spinthir is not really a princess but she sure acts like it, but instead of wanting to be waited on she wants a work force following her orders in a workshop creating magic items.