|“||Open for a random item useful for forging. Rarely contains a Thrice-Forged Shadow Soul.||”|
— Item Tooltip
It is now unavailable in-game as of the December 1st 2015 Snowfest patch (Patch - 12/1/15).
The following were its contents by rarity:
|Flux||500, 750, 1,000||Common|
|Twice-Forged Shadow Soul||1||Uncommon|
|Thrice-Forged Shadow Soul||1||Rare|