Iron Will
( Player's Handbook v.3.5, p. 97)[General]
You have a stronger will than normal.
Prerequisite
Required for
Cumbrous Will (SS) , Epic Devotion (CD) , Epic Devotion (PG) , Force of Will (XPH) , Indomitable Soul (PH2) , Mastery of Madness (PE) , Remain Conscious (MW) , Remain Conscious (SF) , Unnatural Will (HH) , Vengeful Surge (FCII) ,
Benefit
You get a +2 bonus on all Will saving throws