This item is acquired in-game. See its sources below.
A Rare Miscellaneous, item level 1, binds when picked up.
The game's Trading Post catalog lists Trishi for 350 Trader's Tender in the Pets category.
Price and category come from the client's Perks vendor tables (PerksVendorItem). The monthly rotation is not in the client data.
First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Blizzard numbers items as they are created, so the named items next to ID 223339 (223316 to 223344) were usually added in the same batch as Trishi: the same quest line, zone, vendor or reward set.
Trusty Hat ID 223316 · Miscellaneous
Vermillion Imperial Lynx ID 223317 · Miscellaneous · item level 10 "Teaches you how to summon this mount. This mount changes depending on your Riding skill and location."
Dauntless Imperial Lynx ID 223318 · Miscellaneous · item level 10 "Teaches you how to summon this mount. This mount changes depending on your Riding skill and location."
Hannan's Scythe ID 223322 · Quest "A haranir weapon capable of absorbing nature magic for reuse."
Footguards of Shallow Waters ID 223340 · Armor - Plate · item level 437
Warphorn's Resilient Mane ID 223341 · Armor - Cloth · item level 437
Warphorn's Resilient Chestplate ID 223342 · Armor - Plate · item level 437
Warphorn's Resilient Chainmail ID 223343 · Armor - Mail · item level 437
Warphorn's Resilient Vest ID 223344 · Armor - Leather · item level 437The raw ItemSparse values for item 223339 in the current client build.
Read from the World of Warcraft client build files: Item, ItemSparse, Lock, Holidays, AreaTable and CollectableSourceVendor.
TheWoWDB