Hierophobia (Ex): As part of ritual that summons a birch tree spirit and binds it into its tree, it is infused with an unnatural fear of anyone who can wield natural magic. Birch tree sprits fear druids, rangers and clerics with the Plant domain. However, they have no special ability to detect natural magic and only show their fear when a spellcaster does something that draws attention to their ability. After a birch tree spirit becomes aware of a spellcaster with such spells they immediately retreat into their bonded tree or wooden object.