Feat: Eerie Environs
The natural world can be scary to those not used to it—and you make it scarier still. If you're Hidden from a creature, you can attempt to Demoralize it without losing your hidden condition—imitating the sounds of strange beasts or causing the foliage to rustle menacingly. When you do so, you don't take a penalty to your check if the target doesn't understand your language.