Increases the P.Atk of a D-Grade weapons such as sword/one-handed, blunt/one handed, dagger, spear, sword/two-handed, blunt/two-handed, dual swords, and fists, etc. type will increase by 2 and bow type by 4. The M.Atk of all weapons will increase by 2. From +4, the added bonuses for P.Atk/M.Atk are double the above value. When fail on enchanting, item does not get crystallized but it's enchant value will return to 0.