Arcane RuneCasters: Lialla,The Noxious Sorcerer.

One of the few prime runecasters that remain idle on both dark and light side, she uses poison and pestilent magic to deal with any threat (or ally) and expands her coven of runecasters across the land. A prime enemy of the Shadow Scourge legion that dominates lands with undead beings and festering deseases that transfrom any being into a horrific abomination.