Read from the World of Warcraft client build files.
How Ebon Blood Chestguard Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Ebon Blood Chestguard suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Ebon Blood Chestguard is part of the transmog set Regalia of Celestial Harmony (Shaman only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Ebon Blood Chestguard Fits
Other Items Named Ebon Blood Chestguard
6 other items in the current build are also called Ebon Blood Chestguard. 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 104582 (104577 to 104587) were usually added in the same batch as Ebon Blood Chestguard: the same quest line, zone, vendor or reward set.