A boon to get access to a limited set of traits to create a Personal Staff from. Pick a single trait from a list in the boon, and you can craft/purchase a staff with spells you have access to with that trait.
The list of traits that actually have enough spells to craft a full staff from is fairly short, excluding the school traits. The largest trait is Mental, which is probably too broad, but most other spell traits are fairly limited lists (Acid, for example, only has 7 spells associated with it, plus a few generic energy spells that gain the relevant trait).
