When I think of Enchanted Plows, I think of dormant tools coming to life to till the fields. The current effect suggests that you would be trading a tiny bit of food to gain some production. I don't understand.
I propose this spell get changed to 20 mana, same research time, and the effect changed to "Target City loses -1 Logistics to gain +1 Food per Essence". To me this captures the feel of Enchanted Plows.
