When enchanted, the P. Atk. of S grade weapons such as one-handed swords and blunt weapons, daggers and spears increases by 5. The P. Atk of two-handed swords and blunt weapons, dualswords, and two-handed fist-fighting weapons increases by 6. The P. Atk. of bow weapons increases by 10. The M. Atk. of all weapons increases by 4. From +4, P. Atk. and M. Atk. bonus will double for all weapon types. It can be safely enchanted up to +3.