Moonweb 2014
CR 6 aberration
Medium aberration, unaligned
STR10 (+0)
DEX18 (+4)
CON16 (+3)
INT1 (-5)
WIS16 (+3)
CHA6 (-2)
Alien Nature.
Doesn’t require air or sleep.
Transparent.
Advantage on Dex (Stealth) checks while motionless or in dim light.
Bonus Actions
Ethereal Jaunt.
Magically shifts from the Material Plane to the Ethereal Plane or vice versa.
Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details