Archivist of Nature
( Heroes of Horror, p. 119)[General]
In addition to your studies of the darkness, you have spent time studying giants and fey.
Prerequisite
Dark knowledge,
Benefit
You can use your dark knowledge on giants and fey. You use Knowledge (nature) for dark knowledge checks regarding these two creature types.
Normal
Without this feat, a character with dark knowledge can only use that class feature on aberrations, elementals, magical beasts, outsiders, and undea