Ancient Crystal: Enchant R-grade Weapon
Enchant success rate +10% to base success rate. In case of failure, the item's enchant value remains the same. For R-grade weapons. P. Atk. +6 for one-handed swords/ blunts/ staffs, daggers, spears. P. Atk. +7 for two-handed swords/ blunts/ staffs, dual daggers, dual swords, fists, crossbows. P. Atk. +12 for bows. M. Atk. +5 for all weapons. Starting from +4, P./ M. Atk. bonus is greatly increased (more so in case of blessed weapons). Cannot be used with weapons enchanted to +16 and higher.
Not dropped by monsters.
Cannot be spoiled.
The chances are official (x1). On servers with x10, x100 and higher rates, drop and spoil come more often.