Originally posted by Aerio
Ultimecia can possess any sorceress and Edea lost her powers when she got beat up in disk(2 or 3??) and gave them to rinoa and thats how rinoa became a sorceress and how ultimecia can possess her...
Actually. Edea was still a sorceress. Her powers (back from when she was 5) were received from the sorceress before Adel, if memory serves me right. Ultimecia possessed her to do her bidding when she was a grown woman. Which was (SPOILER)AFTER Squall and co. defeated Ulti at the end, but chronologically before anything in FF8 happened