Ogremoch's Bane was a drifting cloud of sentient, invisible magical dust that lived in the city of Blingdenstone since 1358 DR. Named after the lord of evil earth elementals to contrast the presence of Entemoch's Boon, it moved around the city and any creatures from the Elemental Plane of Earth not of a good alignment that it came into contact with were driven into a mindless destructive rage. These creatures could also not be banished back home, so they must be destroyed in order to get rid of them. During the drow attack of 1371, the cloud diverted quite a few of the Svirfneblin's extra-planar allies from the defense of the city.