Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Devoured Magi's Cinch Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Devoured Magi's Cinch suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Devoured Magi's Cinch is part of the transmog set Augur's Ephemeral Plumage (Mage only). The other 13 pieces:
Blizzard numbers items as they are created, so the named items next to ID 243039 (243034 to 243044) were usually added in the same batch as Devoured Magi's Cinch: the same quest line, zone, vendor or reward set.