Reduce the number of Kobold Shamans

Why have so many Kobolds suddenly appeared in the area? And why are the Kobold Shamans gathering on that island? We don't have much time if they are preparing that poison! Before we proceed any further, I need you to get rid of some of those Kobold Shamans for me. This is our only chance of stopping them!
:- Teresa, Guard of Varanas Staff Officer
== On Completion ==
Thank you. You have been a great help to us. Yet... Ifeel this is only part of a much bigger plot...
:- Teresa, Guard of Varanas Staff Officer
== Reward ==
* Experience: 645
* TP: 64
* Money: 1,059
Equipment:
* Kobold Mystic Branch