Divine Fire
Can be obtained from the Sacred Fire summoned in the Fire Source's common area in the Conquest world. To get the Divine Fire, protect your summoned Sacred Fire until it goes out by itself, or steal a Sacred Fire summoned by another character. The Divine Fire is required for enhancing the <Flame Spark> ability of the Primordial Fire Source.
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.