*cough*
Exxon, Kobolds do sometimes carry Maces. Anyway, the exact Kobold Shaman that you are looking for, resides along a sewage drain. His party is split into two, one half on either side of the drain. You will know it is the correct Kobold Shaman because when you walk close enough, he will tell you to get lost.
Hurl one Fireball or Skull Trap to end it fast... real fast.
