This item is acquired in-game. See its sources below.
A Rare Leather Chest, item level 164, binds when picked up.
First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
In the Appearances collection, Thorignir Heartguard is listed as Vendor. Appearance ID: 26874. 1 other item wears 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, Thorignir Heartguard suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Thorignir Heartguard is part of the transmog set Searaider's Battlegarb (Rogue, Monk, Druid and Demon Hunter only). The other 16 pieces:
Azurewing Defender's Drape
Cape of Valarjar CourageCloak of Fading EchoesPutrid CarapaceIceblood ShroudCape of the Duskwatch
Thorignir Breeches
Thorignir SpauldersSearaider's DrapeSearaider's ShroudSearaider's WrapSearaider's CloakSearaider's Spaulders
Searaider's BindingsSearaider's Trousers
Searaider's CapBuilt from the World of Warcraft client build files and recorded Auction House snapshots.
Thorignir Heartguard uses icon file 1116555, which 14 other items also use. The 8 closest by item ID:
Chestguard of Insidious Desire ID 137514 · Armor - Leather · item level 50Wicked Broodmother's Chestguard ID 137449 · Armor - Leather · item level 50Vest of Rupturing Diamonds ID 137336 · Armor - Leather · item level 50Gladeraider's Chestguard ID 240232 · Armor - Leather · item level 13Searaider's Harness ID 240244 · Armor - Leather · item level 13Thirsting Harness ID 240336 · Armor - Leather · item level 13Jerkin of Hungering Flesh ID 240344 · Armor - Leather · item level 13Tunic of the Underworld ID 134439 · Armor - Leather · item level 50Blizzard numbers items as they are created, so the named items next to ID 187582 (187577 to 187587) were usually added in the same batch as Thorignir Heartguard: the same quest line, zone, vendor or reward set.
Korthian Meat Cache ID 187577 · Miscellaneous "Contains an assortment of Shadowlands meat of all qualities."
Warpcaster's Staff ID 187578 · Weapon - Staff · item level 164
Nar'thalas Ceremonial Tunic ID 187579 · Armor - Cloth · item level 164
Nar'thalas Ceremonial Legwraps ID 187580 · Armor - Cloth · item level 164
Nar'thalas Scrollmantle ID 187581 · Armor - Cloth · item level 164Thorignir Breeches ID 187583 · Armor - Leather · item level 164Thorignir Spaulders ID 187584 · Armor - Leather · item level 164
Leyguard Cuirass ID 187585 · Armor - Mail · item level 164
Leyguard Greaves ID 187586 · Armor - Mail · item level 164
Leyguard Mantle ID 187587 · Armor - Mail · item level 164The raw ItemSparse values for item 187582 in the current client build.
Read from the World of Warcraft client build files: Item, ItemSparse, Lock, Holidays, AreaTable and CollectableSourceVendor.
TheWoWDB