Swallow Whole (Ex): The Fenris wolf can try to swallow a grabbed opponent of Huge or smaller size by making a successful grapple check. Once inside, the opponent takes x points of crushing damage plus x points of acid damage per round from the Fenris wolf’s digestive juices. A swallowed creature can cut its way out by dealing x points of damage to the Fenris wolf's digestive tract (AC 35). Once the creature exits, muscular action closes the hole; another swallowed opponent must cut its own way out. The Fenris wolf's gullet can hold x Huge, x Large, x Medium, x Small, or x Tiny or smaller creatures.
Dear heavens. How about 24d6+Str crushing and 12d6+Con acid? Maybe 200 hp to cut out? How about 2 Huge, 4 Large, 8 Medium, 32 Small, 128 Tiny, 512 Diminutive, 2048 Fine?
Sounds good. I dropped the separate number for fine and just went with "Diminutive or smaller creatures). Flies everywhere just breathed a sigh of relief.
Switch "an" to "any" in the unfetterable entry, and it looks good. Although you might want to mention that epic-level magic can bind Fenris Wolf, although a specific item or spell would have to be designed (as indeed it was).
Thunder Bird
Freq: Unique
# App: 1
AC: -2
Move: 15"//24"
Hit Dice/Points: 200
% in Lair: 25%
Treasure Type: U (x 3)
# Att: 2
Dmg/Att: 2-20/1-10
SA: Lightning
SD: Never surprised
MR: 32%
Int: Genius
Alignment: Chaotic good
Size: L (12')
Psionics: Nil
Level/XP Value: X/22,600
This great bird attacks by biting with its beak for 1-10 points and bludgeoning with its wings for 2-20 points of damage. It can cast one lightning bolt per round at any target from 50 to 300 yards away. Each bolt does 30 points of damage (save for half damage). It is never surprised because of the warning that its superb senses give the creature. When it is ready to attack, its wings beat together and thunder sounds.
The Thunder Bird warns of great disaster and is often found fighting evil creatures of great power that have been summoned by the enemies of good tribes. This creature is never invoked. It always comes of its own will and does not leave until the battle is done. It has been known to die in several battles against powerful beings, only to appear again years later to confront another evil.
Originally appered in Deities and Demigods (1980).