Astonishing! Never in my life did I think I might see a god deposed, let alone the all-consuming eye of Gruumsh! But from my time amongst the half-orc, half-human leaders of the new orcish confederation, this appears to be precisely the case. The half-orc leaders claim to have been blessed by Luthic with the common purpose of uniting the orcish tribes. Luthic, the cave mother, resented seeing her children slaughtered and extended her influence to stop the bloodshed. Turns out stopping the spillage of orc blood required, ironically enough, human blood.
-Excerpt from The Complete Anthropology of Terrania in the Age of Arcana