This item is acquired in-game. See its sources below.
An Uncommon Leather Waist, item level 37, binds when picked up.
First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
In the Appearances collection, Incendiary Belt is listed as World Drop. Appearance ID: 14872. 3 other items wear the same appearance:
Read from the World of Warcraft client build files.
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Incendiary Belt suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Incendiary Belt uses icon file 461794, which 11 other items also use. The 5 closest by item ID:
Reinforced Seatbelt ID 65882 · Armor - Leather · item level 36Waistguard of Fallen Hearts ID 65859 · Armor - Leather · item level 36Mar'at Belt ID 65801 · Armor - Leather · item level 36Machine-Linker Girdle ID 63927 · Armor - Leather · item level 36Blade-Dodging Girdle ID 63924 · Armor - Leather · item level 36Blizzard numbers items as they are created, so the named items next to ID 134622 (134617 to 134627) were usually added in the same batch as Incendiary Belt: the same quest line, zone, vendor or reward set.
Scorching Drape ID 134617 · Armor - Cloth · item level 37
Scorching Gavel ID 134618 · Weapon - One-Handed Mace · item level 37
Scorching Staff ID 134619 · Weapon - Staff · item level 37
Incendiary Boots ID 134620 · Armor - Leather · item level 37
Incendiary Helm ID 134621 · Armor - Leather · item level 37
Firebrand's Footguards ID 134623 · Armor - Mail · item level 37
Firebrand's Helm ID 134624 · Armor - Mail · item level 37
Firebrand's Waistguard ID 134625 · Armor - Mail · item level 37
Scorching Necklace ID 134626 · Armor · item level 37
Scorching Pendant ID 134627 · Armor · item level 37The raw ItemSparse values for item 134622 in the current client build.
Read from the World of Warcraft client build files: Item, ItemSparse, Lock, Holidays, AreaTable and CollectableSourceVendor.
TheWoWDB