Needs review
Source: Player's Handbook

Description: +2 on Will Saves

Prerequisites:

Required for: Bonded Armor, Shield, or Weapon, Bonded Ring, Rod, Staff, or Wand, Great Resistance, Overcome Weakness, Remain Conscious, Suppress Weakness, Unnatural Will

You have a stronger will than normal. You get a +2 bonus on all Will saving throws. You can take this feat multiple times.