The Role Aids module I have has several unique creatures in it (I think they're unique). The best foe is a black dragon called Scarsnout.
Standing in the entryway is an immense dragon. Its head is six feet across. The body extends as far as you can see into the darkness. A yellow scar runs from its left eye, across its snout, and into the right nostril.
The dragon speaks, "I know you, whelp. The robot will not save you this time."
SCARSNOUT, SKILL 20 BLACK TRUE DRAGON
HTK: 72 (20d8)
AC: 5 (6 vs. arrows)
AT: 1 (breath) or 3 (claw, claw, bite)
DM: 2d20 (breath) -- save vs. Breath Weapon for half damage; 1d8 (claw); 1d10 (bite)
MV: 15"/30"
AL: N. Evil
INT: Very
THAC0: 6
Specials: Each "true dragon" has his/her own special ability. Scarsnout is the oldest known true dragon and the only one of his race to have
two special abilities, which are:
1) Scarsnout may use his breath weapon at will (i.e. once each melee round).
2) Scarsnout can only be harmed by beings who have died (either resurrected Characters or undead). This explains the prophecy that "only the band from the dead can kill the scarred dragon."
If Scarsnout is so much as cut with Fez's sword (*), the blade of the sword bursts into an extremely hot flame, and Scarsnout takes 10d10 HTK of damage. The sword then become useless and melts.
*Fez's Sword is a Wizard's Sword, which is a sword usable by magic-users with the same proficiency as a fighter or that Character's skill level.
This sword has been forged for a special purpose: if it ever cuts a dragon, then the blade bursts into an extremely hot flame, causing 10d10 HTK of damage to the dragon. The blade is made of graphite; the hilt and grip are coated with asbestos. The asbestos protects the wielder of the sword when it ignites. When the blade ignites, the sword is destroyed. (p. 24)
From "Epilogue" sidebar: Deep in the cave, the party found Scarsnout's treasure. It is estimated that each party member carried out items and gems valued at over a quarter of a million gold pieces. [KF's Note: The module is for 4-8 characters of Skill Levels 3 to 7.]
FROM:
Fez 1: Wizard's Vale (p. 32) [code: 703] -- by James Robert and Len Bland.