Tempest Stone
A precious material gained by dissecting the world's elements. An alchemical material of the highest quality. Double-click to obtain one of the following items: Low-/ Mid-/ High-grade Windy Dye Pack, Talisman of Wind Pack.
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.