I heard on a podcast discussion about how gms can spend 3 doom for a fortune point and finally found text that supports it, albeit in an enemy statblock within the quickstart, along with that, an alternative to the 3 trauma rule for nemeses.
Mighty Foe: Anavenagar can take up to 5 Trauma and Wounds, just as a player character can. Furthermore, he may spend 3 points of Doom on any turn in order to gain the effects of a Fortune point, such as a bonus Standard Action, adding a bonus d20 that has already rolled a 1, or regaining all lost Vigor or Resolve.
Has anyone used these rules? I think i am definitely going to add it as a template for some big baddies. I am also going to spam the 3doom/fortune rule.