Blachorse was a female warhorse belonging to the Faith of Calthoss the Shadow & the Shine, and given to five grey priests to sacrifice along with a wooly rhino at the quarry in the Deadwood Grove of the Arm. Before the two could be sacrificed, one of the five grey priests revealed himself to be the fogman Topaz, and killed the grey priests to open a lychgate. A black star appeared over the quarry, attracting Calthoss, and forty of her men to investigate it, and make a last stand against any tallmen that could possibly have appeared out of the lychgate beneath it.