Legends say that Ahi and Rahab are twins—that the steel
dragon and the gray dragon emerged from the same egg, but
somehow grew up as total opposites. They apparently are indeed from the same hatch, and they are both known to be very
powerful (some say that if they were to fight each other, neither
would live), but the truth of their origin is lost in antiquity. This
may be just as well, for these two dragons are not known for
their hospitality and are said to not look kindly on trespassers.
 

Dragon

Monsters

Dragons

Best of Dragon, Vol. III

Dragon 62

Grey Dragon (Draco Nox Diabolus)

FREQUENCY: Very rare
NO. APPEARING: 1
ARMOR CLASS: -5 (-2)
MOVE: 15"/24"
HIT DICE: 12 (96 hit points)
% IN LAIR: 100%
TREASURE TYPE: H, S, T, U
NO. ATTACKS: 5
DAMAGE/ATTACK: 1-8/1-8/1-4/1-4/5-40
SPECIAL ATTACKS: See below
SPECIAL DEFENSES: See below
MAGIC RESISTANCE: Standard
INTELLIGENCE: Low
ALIGNMENT: Chaotic evil
SIZE: L (48' long)
PSIONIC ABILITY: Nil
    Attack/Defense Modes: Nil
CHANCE OF:
    Speaking: 25%
    Magic Use: 75%
    Sleeping: 10%

    The grey dragon, Rahab, is hated by
dragons as much as he is hated by all
other creatures. The only living things
around him are the men, dwarves, and
goblins he has enslaved. He lives deep in
a cavern in a remote mountain range and
never ventures forth from it.

    The grey dragon attacks with the usual
claw/claw/bite routine but gets two additional
swings with his claws because of his
tremendous speed. The latter two
claw attacks are at -1 "to hit" and do only
1-4 points of damage. Rahab's breath
weapon is a gas cloud that affects all
victims within its boundaries (2" + 2" +
3") as a super-powerful charm spell. Affected
characters or creatures (those
who fail their saving throw vs. breath
weapon) will never again attack Rahab
or seek to do him harm for as long as
they live, or until the effect of the breath
weapon is negated by a Remove Curse
spell.

    Those who enter the dragon's cavern
will find nothing but a large amount of
blackness, for Rahab is hidden by a form
of Continual Darkness. The spell is not
affected by anything save Continual
Light, which will act as a Light spell. In
this darkness, Rahab has an armor class
of -5. If the darkness is temporarily alleviated
by the application of Continual
Light, its armor class worsens to -2.

    If adversaries come close enough to
the dragon, or if Rahab advances toward
his foes, the grey dragon may be able to
envelop his opponents in this blackness,
effectively blinding them. If he manages
to do this Rahab receives a +5 bonus "to
hit" on each character so affected. The
dragon's own vision is sufficient to see
under the darkness. The edge of the area
of darkness is approximately three feet
away from the dragon and surrounds
him totally.

    The dragon can cast two magic-user
spells per day, but can use no spell of
higher than third level.