Defile Uther's Tomb and return to Mehlar Dawnblade at the Bulwark in the Western Plaguelands.
There, that's better. I've added a little fel magic to it.
Now, you must take it to his resting place in the Western Plaguelands. Use the corrupted holy symbol in the presence of Uther's statue to defile his tomb! You'll have to get close for it to work.
To find the tomb go southeast of the Ruins of Andorhal. Return to me when the deed is done.
Be quick about it, [class]!