Source: Dragon #358
Your craftsmanship is unique, imprinting every item you create with your signature style.
Prerequisite: Craft (armorsmithing, bowmaking or weaponsmithing) 4 ranks.
Benefit: Choose one of the following Craft skills in which you have at least 4 ranks: armorsmithing, bowmaking, or weaponsmithing. Whenever you craft a masterwork item using the chosen skill, you may apply any or all of the item qualities you know to the item. You know one item quality plus one additional item quality per 5 ranks of your chosen skill, to a maximum of five item qualities at 20 ranks. Once you select an item quality you may not exchange it late for a different one.
Special: You can gain this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a different Craft skill.