Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Soaring Behemoth's Greathelm Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Soaring Behemoth's Greathelm suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Soaring Behemoth's Greathelm is part of the transmog set Dorn Defender Armaments (Warrior, Paladin and Death Knight only). The other 16 pieces:
Items Numbered Next to Soaring Behemoth's Greathelm
Blizzard numbers items as they are created, so the named items next to ID 221146 (221141 to 221151) were usually added in the same batch as Soaring Behemoth's Greathelm: the same quest line, zone, vendor or reward set.