Forge Prize Box

There are three different kinds of Forge Prize Box: "Glowing" (3★), "Shining" (4★), and "Radiant" (5★) - these correspond to the ★ level of the gear being forged. For example, you won't get a "Radiant Forge Prize Box" while forging a 3★ item like the Swiftstrike Buckler. Prizes will vary in ★ level and amount but will generally be some of these:

Ticket:
-Unique Variant Ticket

Rarity:
-Spark of Life
-Fire Crystal
-Orb of Alchemy

Key:
-Shadow Key