The Grand Ledger

Exposure to alien horrors like those of the Far Realm has warped your physical form in supernatural ways. You gain the following features.

You can hold your breath for 1 hour.

You have proficiency in the Perception skill, if you lack it. You also gain Expertise in that skill.

In addition, you have Blindsight with a range of 15 feet.

Immediately after you make a D20 Test and roll a 1 on the d20, the aberrant influence infecting your form flares, wrenching control of your flesh. Make a Constitution saving throw (DC 13 plus your Proficiency). On a failed save, you have the Stunned condition until the end of your next turn.