First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Related
Emerald Guardian's Casque Game Data
Appearance
In the Appearances collection, Emerald Guardian's Casque is listed as Boss Drop. Appearance IDs: 81077, 81088, 81098, 81116. 1 other item wears the same appearance:
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Emerald Guardian's Casque Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Emerald Guardian's Casque suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Similar Items
The 2 items nearest to Emerald Guardian's Casque (item level 441) in item level among Armor > Plate, Head slot, from item level 415 to 447.
Emerald Guardian's Casque is part of the transmog set Zealous Pyreknight's Ardor (Paladin only), which the Appearances collection lists in 4 versions. The other 14 pieces:
Blizzard numbers items as they are created, so the named items next to ID 207151 (207145 to 207156) were usually added in the same batch as Emerald Guardian's Casque: the same quest line, zone, vendor or reward set.