Take this satchel - in it are the items you will need for your task.$B$BUse the divination scryer in the heart of the Great Ossuary's basement to bring forth accursed spirits that must be judged.  Use your judgments wisely during this trial - they will prove more potent than you realize.  After the spirits, the death knight will appear; defeat him and reclaim the lost soul of the charger.  Only then $N, will you be able to redeem it and place your barding upon your new steed!$B$BGood luck!