Heightend hearing

you have been trained in the art of hearing as a form of seeing. you cannot see your enemies but you can hear them. their heartbeats, their breaths, their muscles tensing. you cannot see them, just a world on fire.

as long as you have the blinded condition you have a blind sight equal to your level x 10. you have advantage on perception check relying on hearing. and gain proficiency with insight. if you are already proficient in insight double your proficiency bonus for Wisdom (insight) checks.

when a sound is made that can be heard 300 feet away and you are within 5ft of the origin. (spells or other non magical means) you loose your blind sight till the start of the initiative count that the sound was made on. being Deafened also removes your blind sight.