Advancement Type Subclass - foundryvtt/dnd5e GitHub Wiki
The Subclass advancement allows for indicating the level at which a class takes it subclass and providing a custom subclass name (such as "Martial Archetype") that will be used in the class journal. This advancement can only be added to classes and each class can only have a single advancement of this type.
Configuration
The Subclass advancement contains only the default advancement configuration options.
Usage
Players will be presented with a button to open up the compendium browser with pre-populated filters and a drop area where a subclass can be dropped if the player doesn't wish to use the compendium browser.
API
The original proposal for the Subclass advancement is available on GitHub, but may not reflect the current state of the advancement.
Configuration Schema
None
Value Schema
The Subclass advancement keeps track of the local copy of the selected subclass as well as the compendium UUID of where this subclass originated.
{
document: "sprHbe7cRg9osTzf", // Available as an `Item5e` instance at runtime
uuid: "Compendium.dnd5e.subclasses.Item.MNvsEc4D2ccX7dQT"
}