I chose both but I like the nature faction more because of many reasons. One is that I like my villagers to live longer (rather than having a larger pop.) because if they're a master at someting than they can help lots for a long time. Another is that when I grow up I want to be a botanist because I love real-life nature. Also, at the beggining I usually have food probs so replininshing food more quickly really helps. Of course, I also like the magic faction. Both are helpful.