Kill 50 Gashthorn Gors in Ostland then speak to the kill collector Droki Greybeard in Bohsenfels to unlock the tome entry Thin the Herd. A good location is the camp at 20k, 37k on the south bank of the river.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.