Prerequisite: Your character must have been blind for at least one year. Due to your experience with blindness you have become accustomed to relying on your other senses.

-You gain blindsight 30 feet

-You gain advantage on wisdom (perception) checks that don’t rely on sight, and you gain advantage on wisdom (insight) checks when the creature in question has a discernible heartbeat.

-Whenever you become subject to a sudden, cacophonous source of sound (thunder damage against you, a large bell, a huge crashing wave, being inside of a dragon’s mouth while it roars, etc…) you must make a DC 15 constitution saving throw or you lose the benefits of this feat and have disadvantage on attack rolls, ability checks, and saving throws until the end of your next turn.

-If your ears are covered you lose the benefits of this feat.

-Once you take this feat nothing short of a wish spell can heal your blindness because the parts of your brain that interact with sight have degenerated completely.