Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Voidlashed Hood Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Voidlashed Hood suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Transmog Sets
Voidlashed Hood is part of the transmog set Burnished Triumvirate Armor (Rogue, Monk, Druid and Demon Hunter only). The other 8 pieces:
Blizzard numbers items as they are created, so the named items next to ID 151336 (151329 to 151342) were usually added in the same batch as Voidlashed Hood: the same quest line, zone, vendor or reward set.