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Failure to Communicate

Kill 40 Island Treants and 40 Drosera Sprites, then speak with Riester.
 

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Introduction

It's difficult to communicate with the locals on Emerald Dragon Island, but after a series of complex gestures, you learn from Riester that the islanders live a hard life under the Emerald Dragon's rule. It seems that some of the local wildlife has been causing problems as well. Perhaps if you get rid of some of the Island Treants and Drosera Sprites, Riester may be willing to give you more information about the Emerald Dragon.

NPC Dialog

(After a series of complex gestures, you come to
understood that the islanders live a hard life under
the Emerald Dragon's rule. It seems that some of
the local wildlife has been causing problems as well.
Perhaps if you get rid of some of the Island Treants
and Drosera Sprites, he may be willing to give you
more information about the Emerald Dragon.)

Quest Completion

(Riester bends his body, touching the ground with
his right hand and his chest with his left as the
Dragon Islanders' gesture of expressing gratitude!)