I wonder, though, if you can in a Saga Adventure use A Good Harvest to declare for Fellowship resources to pay the cost for a non-Fellowship card that needs Fellowship resources (such as Overcome By Fear).
Action: Name a sphere. Until the end of the phase, you can spend resources of any sphere when paying for cards that belong to the named sphere.
You aren't paying for a card that belongs to that sphere, so no.
=(
I guess it would allow me to play Fellowship cards, though.