Frost Witch's Faceguard

Frost Witch's Faceguard are the helm for the Enhancement Shaman Tier 10 set.

Source
Frost Witch's Faceguard may be purchased from three vendors:

•Jedebia for the Allliance and Vol'guk for the Horde at Light's Hammer, within the Icecrown Citadel (You must be part of a raid group to enter.)

•Matilda Brightlink inside of Langrom's Leather & Links in Dalaran.

They cost 95 Emblems of Frost.