Serusa is a member of the Shan Qabal who comes to the island of Kheth on a mission to exterminate survivors of the Morrow's Folly. She arrives with her elf henchman, Faerdan, and claims to be interested only in "magical research" and verifying rumors of "strange magic" on the island.
Serusa wields a +2 force staff (Adventurer's Vault™, page 104) and wears a pair of articulated magic spectacles that allow her to identify subjects of the Shan Qabal's "Wyrmworn Experiment" (these individuals have a pale aura surrounding them when viewed through the spectacles).
This creature is composed entirely of crackling lightning and has a vaguely dragonlike form. Serusa carries a pouch of bright blue marbles that explode into lightning wardrakes when they strike the ground.