Unsolvable Riddle

Unsolvable Riddle
Item Level 37
Binds when picked up
Unique-Equipped
Trinket
+4 Mastery
Requires Level 32
Requires Hellscream's Reach - Exalted
Sell Price: 8 5 7
Winnable by the following class specs:
Monk:
Druid:
Hunter:
Rogue:
Shaman:
Demon Hunter: