I received this item from the piece of the tabernum agriculture quest. The item says it reduces energy required for harvesting crops by 33%. It does this by returning 1 energy every 3 harvests.
But it wont grant me any energy back unless I look at the item in my storage immediately before harvesting. -_- The game keeps forgetting I have it, and it just keeps getting pushed further and further back into storage so it's a pain to keep having to find it.