Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Burning Sky Pauldrons Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Burning Sky Pauldrons suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Burning Sky Pauldrons is part of the transmog set Armor of the Skyfather's Chosen (Hunter, Shaman and Evoker only). The other 16 pieces:
Blizzard numbers items as they are created, so the named items next to ID 137321 (137315 to 137327) were usually added in the same batch as Burning Sky Pauldrons: the same quest line, zone, vendor or reward set.