Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Immolation Headguard Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Immolation Headguard suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Immolation Headguard is part of the transmog set Battleplate of Immolation (Paladin only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Immolation Headguard Fits
Other Items Named Immolation Headguard
2 other items in the current build are also called Immolation Headguard. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Blizzard numbers items as they are created, so the named items next to ID 171790 (171785 to 171795) were usually added in the same batch as Immolation Headguard: the same quest line, zone, vendor or reward set.