Plano Gamers - Blingdenstone
This collection of rock and dust is a sentient being that has lived in Blingdenstone since before the fall. It sometimes takes a loose humanoid form, but Gallus says that it (which he calls “the one who rages” or “raging one”) can be a whirlwind when angered.
He also says that it has freed the earth elementals that the gnomes had enslaved.
When the adventurers arrived, the Bane and its elementals stayed to themselves in the Hall of Miners and rarely, if ever, left that cavern. No one knows exactly what the Bane wants.