Lightforge Helm

Part of the Paladin-aimed Lightforge Armor, a Dungeon Set 1 gear set. Before being updated, the helm looked like the Blood Knight Helm item that was introduced later in the The Burning Crusade.

Source
This item drops from Darkmaster Gandling in Scholomance.

As a quest objective
This item is an objective for the quest Saving the Best for Last.

Please see the Dungeon Set 2 page for a walkthrough on upgrading your Set 1 pieces to Set 2.