Tarrasque
by Ray AllenI converted the Tarrasque for BFRPG awhile back. To use it with classic D&D, just subtract the AC from 20.
Armour Class: 35
Hit Dice: 48 (+16)
Attack: 2 claws, 2 horns, 1 tail slap, 1 bite
Damage: 1d12x2, 1d10x2, 3d8, 4d8
Movement: 20' Rush 150'
No. Appearing: 1
Save As: F20
Morale: 12
Treasure Type: None
XP: 20,400
The Tarrasque is a huge reptile that is 70 feet long and 50 feet tall, and weighs about 130 tons. It attacks with its claws, teeth, horns, and tail. The Tarrasque can not speak and it exist only to eat, kill and destroy everything it encounters. When it is active it ravishes the land for miles. It is only active for a week or two and then returns to it's lair to become dormant for up to 20 years. Only one Tarrasque is said to exist.
The Tarrasque can inspire terror by charging or attacking. Affected creatures must succeed save vs paralysis or become paralysed with fright, remaining in that condition as long as they are within 60 feet of the Tarrasque. Once per turn, the normally slow-moving Tarrasque can suddenly move at a speed of 150 feet for one round and attack. It is immune to all heat/fire and regenerates 1 hp per round. If the Tarrasque loses a limb or body part, the lost portion regrows in 1d6 minutes (the detached piece dies and decays normally). The creature can reattach the severed member instantly by holding it to the stump. The Tarrasque’s armour-like carapace is exceptionally tough and highly reflective, deflecting all rays, lines, cones, and even magic missile spells. There is a 1-in-6 chance of reflecting any such effect back at the caster; otherwise, it is merely negated.
The Tarrasque will swallow it's opponent with a hit of 18 or greater. Once inside, the opponent takes 2d8 points of crushing damage plus 2d8 points of acid damage per round from the Tarrasque's digestive juices. A swallowed creature can cut its way out by dealing 50 points of damage to the Tarrasque's digestive tract (AC 25). Once the creature exits, muscular action closes the hole; another swallowed opponent must cut its own way out.
No form of attack deals lethal damage to the Tarrasque; any spell or effect that would kill it instantly (e.g., a disintegrate spell), instead deals damage equal to the creature’s full normal hit points +10. The Tarrasque can be slain only by raising its damage total to its full normal hit points +10 and using a wish to keep it dead.