Cloak of the Obyrith
(Fiendish Codex I: Hordes of the Abyss, page 85, DnD 3.5)
[Abyssal Heritor]
The chaos of the Abyss suffuses your being, as it does the ancient obyriths.
Prerequisite
Chaotic alignment
Benefit
You gain damage reduction 1/lawful. The amount of damage reduction increases by 1 for each additional Abyssal heritor feat you possess.
Special
You are careless when it comes to your own fundamental well-being and take a -2 penalty on Survival checks.