Collect 3 lion rings, via quest for the lion ring, and say lion rings, then yes to Mordenthal, located in his temple, in the Mountains north of Stonecrest.

Note: You must be misaligned to complete this quest!

Gain :

• Coat of Armageddon or Great Raven Ax
• Decreased Karma

In total, 1 reward will have cost you 1125 Scalps of Moon Tug (that is 375 Scalps of Moon Tug per lion ring)!

You can complete this quest at will.