When enchanted, the P. Atk. of B-Grade weapons such as one-handed swords and blunt weapons, daggers and spears increases by 3. The P. Atk of two-handed swords and blunt weapons, dualswords, and two-handed fist-fighting weapons increases by 4. The P. Atk. of bow weapons increases by 6. The M. Atk. of all weapons increases by 3. From +4, P. Atk. and M. Atk. bonus will double for all weapon types. It can be safely enchanted up to +3.