The game's collection data lists Shadowflame Handwraps as sold by a vendor NPC in Shimmering Expanse.
Vendor
Zone
Map
Waypoint
Other items it sells
NPC #50324
Shimmering Expanse
-
-
10
Vendor NPC, zone and position come from the client's collection source tables (CollectableSourceInfo and CollectableSourceVendorSparse); coordinates are the in-game map readout.
Build history
First seen in build 5.5.4.69585 (Mists of Pandaria).
Read from the World of Warcraft client build files.
How Shadowflame Handwraps Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Shadowflame Handwraps suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Shadowflame Handwraps is part of the transmog set Shadowflame Regalia (Warlock only). The other 8 pieces:
1 other item in the current build is also called Shadowflame Handwraps. 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 65259 (65254 to 65264) were usually added in the same batch as Shadowflame Handwraps: the same quest line, zone, vendor or reward set.