Osyluth
CREATURE 9An osyluth is an unparalleled inquisitor that revels in the sadism and torture for which Hell is so well known. These devils' charge is to seek out heresies, both among mortals and among other fiends-a commandment they uphold with unwavering fervor. They spawn within the Styx-fed swamps of Hell's fifth layer, Stygia; where heresies and the souls of heretics stagnate, osyluths eventually rise. In the remote corners of that same layer of Hell, they build massive, calcified hives where they perform their vile interrogations and perfect their torturous arts upon lesser devils and petitioners alike.
Each type of devil plays a particular role in Hell's bureaucracies and hierarchies, though some have far more specialized functions than others
A creature with greater darkvision can see perfectly well in areas of darkness and dim light, though such vision is in black and white only. A creature with greater darkvision can see through even forms of magical darkness.
A monster with telepathy can communicate mentally with any creatures within the listed radius, as long as they share a language. This doesn't give any special access to their thoughts, and communicates no more information than normal speech would.
The osyluth can cast innate Invisibility using only 1 action.
An osyluth deals an extra 2d6 damage whenever they Strike an Enfeebled, Frightened, or Prone creature.
The osyluth telepathically questions a creature affected by Ring of Truth. After 1 round, if the creature intentionally refuses to answer the question, it takes 2d6 mental damage.
The osyluth sweeps their tail in a 15-foot cone. Each creature in the cone must succeed at a DC 26 Reflex save or be knocked Prone.