The Duke of Crows Patron abilities are focused on giving power for gold. That’s basically it. However there is a interesting dynamic with the patron. To balance out this patron, if it favors you, you cannot use it’s ability, otherwise you could just dump your gold into power every turn. “Pay all of your gold: Gain Power equal to Gold paid minus 1.” (Neutral ability)
Favored – (N/A)
Unfavored – “Pay all of your gold: Gain Power equal to Gold paid minus 1.”
A strategy with this is don’t use this ability until you have a lot of gold to get maximum value. Because once you use it once you can’t use it again until the opponent uses it. So be patient with it.