The followers of the mechanogod Whrrrm, those who could never have come about until the advent of steamtech.
And because they had shown they could not be trusted, Iev abolished the use of Kren save by those few individuals he trusted.
~The True History of the Order, by F’ian circa 300 AW
Nearly every primitive culture has had rituals and celebrations to guarantee the proper passage of the seasons and to ensure the fertility of crops and animals. Oversight of these ceremonies was generally the provenance of local kings or priests.
Suppose that the adventurers dispatch one of these fellows. The local peasants may become hysterical, fearing famine and death will stalk the land. Alternatively, they may want one of the new heroes to become king. For a while, this can be a good thing, but the first time that the crops fail, the superstitious locals will want to sacrifice their new leader.