Tainted Warrior

All information about the taint can be found on page 189 of Unearthed Arcana.

Weapon and Armor Proficiency: Tainted warriors do not gain any additional weapon or armor proficiencies.

Taint Suppression: By definition, a tainted warrior is overwhelmed with taint, but this taint is not immediately obvious to onlookers. A tainted warrior’s taint manifests in mental effects—delirium, anger, and cruelty—and in internal physical effects. If a tainted warrior is split open, the internal corruption is obvious: His body is full of vile liquids and distorted growths, even internal limbs. If a tainted warrior enters a tainted area, his corruption immediately manifests externally as well. Barring these two conditions, it is impossible to detect a tainted warrior based on appearance. A tainted warrior no longer applies his taint score as a penalty to his Constitution, and only applies one-half his taint score as a penalty to his Wisdom.

Damage Reduction (Ex): At 2nd level, a tainted warrior gains damage reduction 1/good. The value of the character’s damage reduction increases by 1 point at every even-numbered level thereafter.

Tainted Strike (Ex): A tainted warrior of 3rd level or higher can infuse a melee attack with the power of his taint. The character adds his taint score to the damage dealt by the melee attack, and the target’s taint score increases by 1. If a tainted warrior strikes a creature immune to the effects of taint (such as an undead creature or a creature with the evil subtype), the tainted strike has no effect. A tainted warrior can use this ability once per day upon attaining 3rd level and one additional time per day for every four levels gained thereafter.