Immunity of the Faerie (Witch)

The witch becomes strong against weapons that are not made of pure iron.

Liber Mysterium

The Netbook of Witches and Warlocks

By Timothy S. Brannan and The Netbook of Witches and Warlocks Team

Full netbook can be found on the followng website

Dom of D20 / D&D 3e Netbooks and Downloads.

Prerequisites: Witch Level 5+

Benefit: The witch gains damage reduction 1/cold iron.

Special: This feat can be taken more than once. Its bonuses are cumulative.