The game's collection data lists Sha-Skin Hood as sold by a vendor NPC in Warspear.
Vendor
Zone
Map
Waypoint
Other items it sells
NPC #88569
Warspear
-
-
166
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).
(2) Set: Increases the damage done by your Corruption spell by 10%, increases the damage done by your Incinerate spell by 5%, and increases the damage done by your Shadow Bolt, Touch of Chaos, and Demonic Slash by 2%.
(4) Set: While Dark Soul is active, your damage is increased by 10%.
Bonuses activate at 2 pieces and 4 pieces equipped.
Read from the World of Warcraft client build files.
How Sha-Skin Hood Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Sha-Skin Hood suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Sha-Skin Hood is part of the transmog set Sha Skin Regalia (Warlock only). The other 16 pieces:
3 other items in the current build are also called Sha-Skin Hood. 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 87188 (87183 to 87193) were usually added in the same batch as Sha-Skin Hood: the same quest line, zone, vendor or reward set.