For R-grade weapons. One-handed sword/ blunt/ staff, dagger, spear: P. Atk. +6. Two-handed sword/ blunt/ staff, dual daggers, dual swords, fists, crossbow: P. Atk. +7. Bow: P. Atk. +12. All weapons: M. Atk. +5. Starting from +4, P./ M. Atk. bonus is greatly increased (more so in case of blessed weapons). Enchanting is random from +1 to +3.
Cannot be used with weapons enchanted to +30 and higher.
+1 - 57%
+2 - 29%
+3 - 14%