I am trying to make sure I understand the interaction between the harvest rules and the luminaries that allow players to take optional actions before or after their play.
I can logically follow taking optional Loom or Changeling actions before and after a sow or stockpile action. I can also easily follow taking optional actions before and after a harvest action if your harvest action does not clear a field. But what about when your harvest action clears at least one field? Assume the Changeling or Loom is face-up somewhere on the board and I just harvested to clear out a field with another face-up luminary. When can I take the optional exchange and/or stockpile action? Do I have an opportunity prior to drawing up to 4 and resolving the rest of the harvest clean-up steps? Or must a player take all optional actions before a harvest action that will result in clearing a field?