Needs review
Source: Player's Handbook

Description: +3 HP

Prerequisites:

Required for: Arcane Consumption, Arcane Toughness, Endure Blows, Fury Without End, Hida's Rage, Involuntary Rage, Pain Mastery, Remain Conscious, Strength of the Earth, Unyielding Fury

You are tougher than normal. You gain +3 hit points.

Special: If you gain this feat multiple times it stacks.