Collect 2 Lion Rings, via the Lion Ring Quest, and give them to Sir Beltigan, located in his castle, South-East of Stonecrest. Note, you must be of good alignment to perform this quest!
Rewards:

• Tiger's Eye or Crystal Sword
• Karma increase karma

In total, 1 reward will cost you 750 Moon Tug Scalps (i.e., 375 Moon Tug Scalps per Lion Ring)!

You can repeat this quest at will.