21st Anniversary Chestnut Cookie
For 30 min., Attribute Attack/ Resistance +100, Critical Rate for basic attacks and P./ M. skills +5%, Critical Damage for basic attacks and P./ M. skills +5%, received Critical Damage from basic attacks and P./ M. skills -5%.
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.