Complex sentence: Cadsuane Malaidhrin is an Aes Sedai of the Green Ajah who has approached legendary status among Aes Sedai while stilla live, most Aes Sedai believe her to be dead.
Split into simpler sentences: Cadsuane Malaidhrin is an Aes Sedai of the Green Ajah who has approached legendary status among Aes Sedai while still alive. Most Aes Sedai believe her to be dead.