I am having trouble finding a way to call a trigger when a peasant returns lumber. I need an event of some kind that will call the trigger and an action that can tell me how much lumber was returned. I thought about diverting lumber income to another player and periodically call a trigger to add mana based on the amount of lumber the player has. The problem is that I do not know which Lumber Mill or Town Hall received the lumber, and I need to give mana to those buildings. It seems that I need to create a new ability for this, probably based on the Channel ability, but then players cannot right click on trees to harvest them. Any ideas?