Go to the Tomb Keeper Camp and use the Water Element Piece beside Kasor to release her from the curse. Then report back to Garlandi.

Show Quest Info

Introduction

The Water Element Piece has been found, now Garlandi needs you to use it to undo Kasor's curse.

NPC Dialog

Now that we have the Water Element Piece, you
can use it to release Kasor's curse. Only you can do
this.

Quest Completion

Now Kasor's curse has been undone as well! Next,
we need to find the Fire Element Piece to release
Lester's curse.