SUPERIOR

Class- ANY

Begining at 19th level, if you crit fail any roll you are proficient in, you roll again, you must take that number unless it is a crit fail. If the second roll is a crit fail roll with advantage. If you somehow manage to crit fail with advantage, you roll with superiority, 3D20 and take the greatest number, if you crit fail AGAIN, you add the total of all of the ones, this is your total.

At 20th level, rolling a 1, 2 or a 3 counts as a crit fail