Indomitable Discipline
(Player's Guide to Eberron, page 86, DnD 3.5)
[General]
Many aberrations in Khyber possess powers allowing them to control the minds of lesser creatures. Your strict mental discipline allows you to resist attempts to manipulate your thoughts.
Prerequisite
Region of origin Shadow Marches, Eldeen Reaches, Adar, or Riedra
Benefit
You receive a +3 bonus on saving throws again charm or compulsion effects, or any other effect that would give another creature control of your thoughts (such as an aboleth's enslave ability).