Idea of a new champion

Hi beloved summoners, I had an idea for the game. I main support and Riot doesn't seem to release many supports, the last one was Tahm Kench, I was thinking about a champion that could be an aggressive support and at the same time a passive one, like the champion had like bipolar disorder or was possessed by a demon, and the abilities changed based on what she/he was, like Jayce, the champion could heal/shield but could change to something with more poke, what do you think? :) Please tell me your opinions about this champ :) I would love to see a new support champion being released.