Umbral
Traits
If creature already has darkvision, increase its range by 60 feet. |
Blindsense (vibration) (CR 7+) If CR 7 or greater, gains blindsense (vibration) with a range of 5 feet (if the creature already has a form of blindsense, add 5 feet to that sense’s range). |
Umbral creatures exist in the lightless places of the universe, which might be the Shadow Plane, the interior of unlit caves, or the bottom of the darkest oceans.
Source
Alien Archive pg. 151