Improved Toughness

(Libris Mortis: The Book of the Dead, page 27, DnD 3.5)

[General]

You are signifi cantly tougher than normal.

Prerequisite

Base Fortitude save bonus +2

Benefit

You gain a number of hit points equal to your current Hit Dice. Each time you gain a Hit Die (such as by gaining a level), you gain 1 additional hit point. If you lose a Hit Die (such as by losing a level), you lose 1 hit point permanently