Your Game Master may accept to waive such prerequisites if your background or in game actions justify it. Unlike normal Feats, a Prowess can be acquired several times.
You gain some insight into the future. This insight might come from a dream, the usage of drugs or some form of divination.
The Game Master can choose to give you some insights into the events to come or at least have to describe you in detail the next event on the Ambiance Track.