Hero's Gold Chest 90-day limited period
Hero's Gold Chest Gift box containing 1 each of a Hero's Treasure Box, Dimensional Support Pack, Potion Support Pack, and Supplies Support Pack. Cannot be exchanged, dropped, or destroyed. Can be stored in a private warehouse.
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.