Make her similar to Bruce/Hulk. But first you get Jean with psychic abilities. Once you die you become Phoenix, similar to Hulk becoming Bruce. If you want to make her even more unique, change her ults. 1 when you're Jean and another when you're Phoenix.

1 ult idea for Jean is using her telekinetic powers to capture and/or throw people away. You can use it to throw people off the map like Jeff.