Worshipers of the Orc deity Gruumsh that have put out their own right eye in a bloody and painful ritual. These living martyrs to Gruumsh are some of the toughest orcs and half-orcs in the world.
The eye of Gruumsh is a true prestige class in the sense that all orcs respect those who achieve it.
Barbarians gain the most value from this prestige class, since it encourages raging as a fighting style

Hit Die: d12
Proficiencies: Simple and Martial Weapons, Light, and Medium Armor Proficiency, Shields
Primary Saving throw(s): fortitude.
Base Attack Bonus: +1/level.

Alignment: Chaotic evil, choatic neutral, or neutral evil.
Race: Half-Orc or Orc
Feats: Exotic Weapon Proficiency, Weapon Focus (Double Axe).
Base Attack Bonus: +6

The eye of Gruumsh's class skills (and the key ability for each skill) are Discipline (Str), Intimidate (Cha), Heal (Wis), Parry (Dex), Ride (Dex) and Taunt (Cha).

Skill Points at Each Additional Level: 2 + Int modifier.

All of the following are class features of the eye of Gruumsh prestige class.

Blind-Fight: An eye of Gruumsh gains Blind-Fight as a bonus feat. In addition, he suffers no adverse effects from the loss of one of his eyes.

Command the Horde: An eye of Gruumsh can direct the actions of any nongood orcs or half-orcs that are within 30 feet of him and whose Hit Dice are lower than his character level. Those who follow the character’s orders gain a +2 morale bonus on Will saves.

Rage: An eye of Gruumsh can fly into a rage just as a barbarian can, with all the same benefits and drawbacks. An eye of Gruumsh’s class levels stack with his barbarian levels (if any) for determining the number of times per day he can use his rage ability.

Swing Blindly: An eye of Gruumsh’s rage becomes more powerful when he reaches 2nd level, but at the cost of lowered defenses. The character adds an extra +4 to Strength while in a rage, but his Armor Class penalty goes from –2 to –4.

Ritual Scarring: Through frequent disfiguration of his own skin, an eye of Gruumsh’s natural armor bonus improves by +1 at 3rd level (or to +1 if he didn’t already have a natural armor bonus). This bonus increases by another +1 for every three eye of Gruumsh levels gained thereafter.

Blinding Spittle: An eye of Gruumsh of 4th level or higher can launch blinding spittle at any opponent within 20 feet. With a successful ranged touch attack (at a –4 penalty), he spits his stomach acid into the target’s eyes. An opponent who fails a Reflex save (DC 10 + eye of Gruumsh’s class level + eye of Gruumsh’s Con modifier) is blinded until he or she can rinse away the spittle. This attack has no effect on creatures that don’t have eyes or don’t depend on vision. Blinding spittle is usable twice per day at 4th level and four times per day at 7th level.

Blindsight: At 5th level, an eye of Gruumsh gains blindsight (see page 306 of the Monster Manual) out to 5 feet. The range increases to 10 feet at 8th level.

Double slice: At 5th level, an eye of Gruumsh adds his normal (full) strength modifier to all damage rolls made with the off-hand end of the double axe.

Sight of Gruumsh: At 10th level, an eye of Gruumsh gains the ability to see the moment of his own death through his missing eye. This foreknowledge gives him a +2 morale bonus on all saving throws and Armor Class from then on. He also does not go unconscious when reduced to negative hit points; however, the character still dies at –10 hit points. (Whether or not the vision is accurate is irrelevant - the character believes it to be true.)

Tireless Rage: No longer fatigued after rage.

Double Axe mastery: At 10th level, an eye of Gruumsh can fight with double axe as if it was a two-hand weapon. Any weapon specific mechanic will now consider double axe wielded by eye of Gruumsh as if it was two-handed weapon. This benefit applies to both ends of the double axe, meaning that each end adds 1.5x strength modifier to its damage rolls.