When you press pick ambition sometimes you get an ambition to revoke a title. This is a great way to reorganize your empire, without having to get claims on the title or incurring tyranny. But I can't figure out what decides which titles can be revoked through amibition. Anyone got a clue? So far I've ruled out:
- Having a claim on the title.
- Ruler desiring title.
- Title was granted by ruler.
- Holder of title doing traitorous stuff.