Death Slaadi (The Lesser Masters)

(bottom = death slaad)

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

NO. APPEARING: 1-2
ARMOR CLASS: 4
MOVE: 12"
HIT DICE: 15+7
% IN LAIR: 50%
TREASURE TYPE: [Z] (x 4)
NO. OF ATTACKS: 3 or 2
DAMAGE/ATTACK: 3-18/3-18 or two sword attacks at 1-8 plus bonuses
SPECIAL ATTACKS: [SB]
SPECIAL DEFENSES: +2 or better weapon to hit; see below
MAGIC RESISTANCE: 75%
INTELLIGENCE: Genius
ALIGNMENT: Chaotic neutral
SIZE: M (6' high)
PSIONIC ABILITY: 207
    Attack/Defense Modes: All / all
LEVEL/X.P. VALUE: X | 13,250 + 20

Only four of these fearsome monsters are known to exist.
They have rarely been seen in slaad form since they use human form exclusively on the Prime Material Plane, wearing no armour but using deadly swords of great magical power (such as swords of sharpness, for example).

In human form they attack with their sword twice in a single melee round.
In slaad form they attack with two claws (3-18 HP of damage each) and a bite for 2-20 HP of damage; a successful bite drains 1-3 experience levels of the victim (save permitted -- if successful it negates the effect).

They may travel the planes at will and also have the following powers at will:
    astral projection,
    ESP,
    fear,
    darkness 15' radius,
    detect invisibility,
    detect magic,
    invisibility,
    advanced illusion,
    cloudkill,
    wind walk,
    locate object,
    shape change (slaad/man),
    flame strike,
    weakness.
Once per round they may attempt to gate in another slaad with a 90% chance of the gate opening (equal chance of red, blue, green or grey slaad appearing).
Once per day they can use any symbol, power word: stun, unholy word, generate an 8d6 fireball, create a phantasmal killer.

by Charles Stross