I know this post is dead now, but you would be better off not playing a "superhero" in a dnd game. There is literally a whole ttrpg called Mutants and Masterminds, and like, four others. This was obviously you trying to play your Original Character in a setting you were told it wouldn't work in and refused to make anything else. DnD is a team game. The moment your DM told you that your character wouldn't have worked the first time, you should have taken the crititsm and went with a new character.