Bond with nature in this charming expansion pack means...

I think it's going to mean werewolves ("bond" + the bathroom with the moon in the DHD trailer, which belonged to a possible werewolf) and fairies ("charming" + the storybook decor style revealed in Tuesday's livestream). Sigh. I wasn't a fan of either werewolves or fairies in TS3, but I probably will get the EP just for the new world.