Improved Fortification
(Eberron Campaign Setting, page 55, DnD 3.5)
[Warforged]
You improve your warforged fortifi cation, gaining immunity to sneak attacks and extra damage from critical hits.
Prerequisite
Warforged, base attack bonus +6
Benefit
You gain immunity to sneak attacks and extra damage from critical hits, but you lose the ability to be healed by spells of the healing subschool.