I have been looking at the Amnesiac Archetype in the Occult Adventures book and wondered if this could would work well retooled for a sorcerer?
I have been toying with writing an adventure where all of the adventurers awake with no memories in a crater near town. Each has a set of abstract images that float around their brain (represented by cards) these turn out to be spells which the characters can learn to focus as they gain experience, and learn how they came to be in the crater with the abilities.
I also wondered if it would be good to have each character start with the amnesiac psychic at first level, but have no other psychics in the game world to make the powers seem more exotic. The PCs stat their character as they wish, but they can only choose the class they wish to follow from level 2, as level 1 is taken by the psychic class.