Commander Eligor Dawnbringer at Light's Hope Chapel in the Eastern Plaguelands will make a pair of Redemption Legguards if you bring him the following: 1 Desecrated Legguards, 20 Wartorn Plate Scraps, 4 Arcanite Bars and 2 Nexus Crystals.
You will find the remnants of our fallen heroes on the corpses of the Lords of Naxxramas. Bring those desecrated keepsakes to me along with wartorn plate scraps and crafting materials capable of revitalizing the cursed armor and I shall craft a fine piece of armor for you.
Exellent <name> !
, you got everything just as i asked and now i can make a Redemption Legguards.
The entirety of this quest happens at Eastern Plaguelands