Vanquisher's Mark of Sanctification is a tier 10 armor token. It can be turned in at various NPCs at Light's Hammer in Icecrown Citadel to upgrade to the heroic versions of the following tier set pieces:
- 18px Shadowblade's Battlegear
- 18px Scourgelord's Battlegear/Scourgelord's Plate
- 18px Bloodmage's Regalia
- 18px Lasherweave Battlegear/Lasherweave Garb/Lasherweave Regalia
This item can be found in the Deathbringer's Cache after defeating Deathbringer Saurfang in the 10-man Heroic or 25-man normal version of Icecrown Citadel. It also drops from Professor Putricide, Blood-Queen Lana'thel, and Sindragosa.