Twisted Rune

Twisted Rune is a secret organization of undead and monstrous spellcasters, operating in southern Faerûn.

It is possible to have battle with several of their members in Shadows of Amn, if you bring Rogue Stone to the portal in Athkatla Bridge, you will be teleported to their hideout where you will fight them.

Balthazar mercenaries rumoured that he had been cooperating with members of this organization.