Armor Manipulation (3.5e Feat)
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Armor Manipulation [General]
You may activate the special abilities of any armor or shield that you wear.
Prerequisite: Armor Proficiency (Light), Armor Proficiency (Medium), Armor Proficiency (Heavy), Shield Proficiency
Benefit: As a swift action, while wearing magic armor or shield, you may choose to suppress or restore some or all of a object's special abilities in order to increase or decrease the object's enhancement bonuses. For example, you have +1 ghost touch chainmail. You could suppress the ghost touch ability (which is a +3 ability) to make the armor act like a +4 chainmail. Any changes that you make to the object lasts until you change the object again, or someone else wears the object.