Craft the Entrancing Othmir Flute, using the Hypnotic Othmir Flute recipe from Notes on Wurm Control recipe book you received from Livi, on a Forge ( -1147, -532, 3390 ) Copy/waypoint -1147, -532, 3390, using the following materials:
Use the flute on 3 wurms and take the saliva. An easy way to do this is to drag the icon of the flute from your bag to a hotbar, then target the wurm and click the flute.
