This item is acquired in-game. See its sources below.
An Uncommon Leather Waist, item level 13, requires level 10, binds when picked up.
First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
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, Nightstalker's Cinch suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Nightstalker's Cinch is part of the transmog set Guise of the Nightstalker (Rogue, Monk, Druid and Demon Hunter only). The other 16 pieces:
Spore-Coated Vest
Tattered Scornful Leggings
Mo'arg Heavyweight's WristwrapsCerulean Shadowfade Belt
Treads of Creeping Shadows
Feaster Hide Gloves
Shoulderguards of Legion Domination
Legion Stalker's Hood
Nightstalker's WrapNightstalker's CloakNightstalker's ShroudNightstalker's GripsNightstalker's WrapsNightstalker's BootsNightstalker's TrousersNightstalker's ChestguardBuilt from the World of Warcraft client build files and recorded Auction House snapshots.
Nightstalker's Cinch uses icon file 1546398, which 22 other items also use. The 8 closest by item ID:
Netherfiend Waistband ID 240559 · Armor - Leather · item level 13Lunarblight Leather Strap ID 240778 · Armor - Leather · item level 13Lunarblight Belt ID 146866 · Armor - Leather · item level 50Netherfiend Belt ID 146775 · Armor - Leather · item level 50Immaculate Spellsash ID 146691 · QuestFerocious Combatant's Leather Belt ID 146045 · Armor - Leather · item level 50Ferocious Combatant's Leather Belt ID 146044 · Armor - Leather · item level 50Ferocious Combatant's Ironskin Belt ID 145985 · Armor - Leather · item level 50Blizzard numbers items as they are created, so the named items next to ID 240327 (240322 to 240332) were usually added in the same batch as Nightstalker's Cinch: the same quest line, zone, vendor or reward set.
Faceguard of Skyfather's Chosen ID 240322 · Armor - Mail · item level 13Nightstalker's Grips ID 240323 · Armor - Leather · item level 13Nightstalker's Wraps ID 240324 · Armor - Leather · item level 13Nightstalker's Boots ID 240325 · Armor - Leather · item level 13Nightstalker's Trousers ID 240326 · Armor - Leather · item level 13Nightstalker's Chestguard ID 240328 · Armor - Leather · item level 13Nightstalker's Mantle ID 240329 · Armor - Leather · item level 13Nightstalker's Cap ID 240330 · Armor - Leather · item level 13
Thirsting Grips ID 240331 · Armor - Leather · item level 13
Thirsting Bindings ID 240332 · Armor - Leather · item level 13The raw ItemSparse values for item 240327 in the current client build.
Read from the World of Warcraft client build files: Item, ItemSparse, Lock, Holidays, AreaTable and CollectableSourceVendor.
TheWoWDB