The highly psionic Volvas commune with YGGDRASIL to provide lore in support of Asgardr interests among the Nine Worlds. In ancient times, they used telepathy and telekinesis to aid themselves, but after the discovery of YGGDRASIL, they became the AI's “priesthood.”
Volva are cyberkinetic in modern times. They speak to all manner of technology, diagnosing failures or collecting data.