Paolo Greco Fate is for opening/exploding 6es after you roll, mostly. And Persona is for buying dice before you roll, mostly. They all have secondary uses that nobody remembers as well. Like Persona can protect you from death, iirc.

Deeds is a special rare economy, like once per arc, where you can roll twice your pool or shade-shift your dice. I can’t remember, honestly, Deeds hardly ever comes up.