Amnesiac Hero: A side-effect of the aetherial possession.The Taken can pick two out of nine (six from the base game, two from Ashes of Malmouth, one from Forgotten Gods) classes called 'Masteries' as they level up, with many different skills and affinities.
This experience left them with no recollection of his/her past and newfound abilities and power. A human formerly possessed by an Aetherial.