PC Blindsight

You are completely unable to read unless you are physically touching embossed writing. You are completely unable to perceive colors.

You are unable to quickly differentiate creatures of the same race unless they identify themselves or are wearing drastically different clothing (metal vs. cloth) or have clearly identifying features such as age, size, signature scent or voice. To identify one creature from an otherwise similar creature from its race you need to succeed on a DC10 WIS (perception) check. The DC may be raided by the GM if the creature is intentionally obfuscating its identity from you.

The more time you spend with a creature the faster you can identify it separate from other creatures of its race. You can maintain a list of characters you can specifically identify regardless of body type or clothing without a roll. If a creature is friendly towards you, you only need to spend 1 hour studying them before you are able to identify them without a roll. If a creature is neutral you need 1d10-WIS hours studying them before you are able to identify them without a roll. For any creature that is hostile towards you you need to spend 1d20-WIS hours studying them before you are able to identify them without a roll.

In addition to having blindsight within 30 feet, you have attuned one sense more than your others and are able to reach out farther using that sense. Pick one:

Echolocation: You are able to sense things within 120ft of you and the materials they're made out of, so long as there are no obstructions between you and it.

Magic Sense: You are able to sense the location of creatures and people within 60ft of you, and know if they are casting spells. This does not work if the person is being protected from scrying of any kind.

Tremor Sense: You gain tremor sense within 60 ft and know the location of any object that is in contact with the ground. You can identify the material and contents of any object by touch.

Seeing Eye Familiar: You gain the ability to cast "Find Familiar" once per long rest. As long as you stay within 100ft of your familiar, you can use it's senses in lieu of your own.