FREQUENCY: Very rare
FREQUENCY: Very rare ([Dungeon Level VII])
FREQUENCY: Rare ([Astral Plane])

NO. APPEARING: 1-2
ARMOR CLASS: -1
MOVE: 6" / 15"
HIT DICE: 6+6
% IN LAIR: 60%
TREASURE TYPE: [Q], [R]
NO. OF ATTACKS: 1
DAMAGE/ATTACK: 2-8
SPECIAL ATTACKS: [SB]
SPECIAL DEFENSES: Cannot be hit by normal weapons - see below
MAGIC RESISTANCE: 50%
INTELLIGENCE: High
ALIGNMENT: Lawful evil
SIZE: M
PSIONIC ABILITY: 121
    Attack/Defense Modes: B, D / F, G, H
LEVEL/X.P. VALUE: VII | 1,275 + 8*
    (for destroying material form only - if actually killed permanently, multiply X.P. figure by 10)

Residents on the firth plane of Hell,
<Residents of Stygia, the 5th Hell,>

styx devils are humanoid buth with
disproportionately large, ugly heads and wings of black trimmed with
silver. Their main task is to search for souls to take back Geryon,
but from time to time they will tour the Material Plane with intent to
destroy all humans they meet.

The styx devil is invulnerable to normal weapons buut can be damaged by
silver weapons and by magical weapons with a bonus of +1 or better.

Their touch causes 2-8 hit points of damage and has a 50% chance of
inflicting an imprisonment spell on the victim (no save).
Treat this as if CAST at the 22nd level of magic use and regard the styx devil
as having perfect info regarding the victim's Name & background.

To dispel a styx devil requires the utterance of a holy word.

For purposes of aerial combat, the styx devil is manouevrability class C.
 

    by Ian Livingstone