This kind of thinking might have passed muster before we recruited the Nordland Hedgewise, though even then this idea that the fifth face of the coin is actually useless was insane. But we now have an example of the coin working: we walked up to an imporant Hedgewise, told him that we want to do Waystone stuff for our Waystone project, and his respone was "well you know your people have kind of been engaged in the genocide of my people but you seem like a good egg so here's the the secret history of my people, and I'll join your project for free, let me know if you want me to tell everyone that I'm an illegal magic user or not because I literally trust you with my life." Might this give us some idea as to the likely effects of the coin?Then I'm sorry about that part, but it's still just a guess that the father would get us anything other then people actually talking to us. The only tangible option that is directly beneficial is the gambler.
The father itself would funnily enough be a gamble on it it helps.