First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Related
Void Ascendant's Mantle Game Data
Appearance
In the Appearances collection, Void Ascendant's Mantle is listed as Boss Drop. Appearance IDs: 41050, 41049, 41048, 41073. 4 other items wear the same appearance:
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Void Ascendant's Mantle Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Void Ascendant's Mantle suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Void Ascendant's Mantle is part of the transmog set Oblivion Cultist's Robes (Priest, Mage and Warlock only), which the Appearances collection lists in 4 versions. The other 16 pieces:
Blizzard numbers items as they are created, so the named items next to ID 174120 (174115 to 174125) were usually added in the same batch as Void Ascendant's Mantle: the same quest line, zone, vendor or reward set.