You are no mere humanoid, to be toyed with by petty enchantments.
Prerequisites
Wisdom 14, Giant Bloodline.
Benefit
You gain immunity to enchantment effects that target only humanoids, such as charm person and hold person.
In addition, you gain a racial bonus on all Will saving throws equal to one-fourth the number of gigantic feats you possess, including this one (minimum 0).
Special
This feat counts as Iron Will for the purposes of meeting prerequisites.