Ancient Weapon Enchant Crystal (B-Grade)
10 % increase in enchant success rate. When enchant fails, the existing enchant value is retained. Defense power for B-grade armor and accessories increases by 1. It increases by 3 after +4. It can safely be enchanted up to +3. For one-piece armor, it can safely be enchanted up to +4. Cannot use armor enchanted by above 16. No exchange/drop available
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.