Dragon, Fang Great Wyrm (CR 21)

Gargantuan Dragon (Air)
Alignment: Always Chaotic Neutral
Initiative: +0; Senses: blindsense 60 ft., darkvision120 ft., low-light vision, and keen senses
Languages: Draconic

AC: 41 (-4 size, +35 natural), touch 6, flat-footed 41
Hit Dice: 36d12+252 (486 hp); DR: 20/magic
Fort +27, Ref +20, Will +26
Speed: 60 ft., fly 150 ft. (clumsy)
Space: 20 ft. by 60 ft./15 ft.
Base Attack +36; Grapple +61
Attack: 1 Bite +45, 2 claws +40, 2 wings +40, 1 Tail Slap +40, 1 crush +40, 1 Tail sweep +40 melee
Damage: 1 bite 4d6+13, 2 claws 2d8+6, 2 wings 2d6+6, 1 tail slap 2d8+19, 1 crush 4d6+19, 1 tail sweep 2d6+19, Ability drain (bite) 2d6 (33)
Special Attacks/Actions: Ability drain, fear (DC 33), SR 31
Abilities: Str 37, Dex 10, Con 23, Int 20, Wis 23, Cha 20
Special Qualities: Increased damage, trip sound imitation, detect magic, read magic, shield, dispel magic, spell turning, telekinesis, globe of invulnerability, 15th level caster, fast healing 2. Can also cast cleric spells and those from the Chaos, Death, Magic and Protection domains as arcane spells.
Feats: #Feats: 13
Skills: Skill points: 186
Advancement: 37+ HD (Gargantuan)
Climate/Terrain: Temperate mountains
Organization: Solitary or clutch (2-5)
Treasure/Possessions: Double Standard

Source: Draconomicon

Ability Drain (Su): A fang dragon does not have a breath weapon, but its bite permanently drains Constitution by 2d6 if the victim fails a Fortitude save (DC ).

Increased Damage (Ex): Because of their sharp claws, teeth, and scales, fang dragons deal damage as if they were one size larger. This ability does not enable the dragon to use attack forms normally not allowed to a dragon of its size. Thus, a very young (Small) fang dragon deals 1d8 points of bite damage and 1d6 points of claw damage (as if it were Medium-size), but cannot make wing attacks.

Trip (Ex): A fang dragon that hits with a claw or tail attack can attempt to trip the opponent as a free action. If the attempt fails, the opponent cannot react to trip the dragon.

Sound Imitation (Ex): A fang dragon can mimic any voice or sound it has heard, anytime it likes. Listeners must succeed at a Will save (DC equal to that of the dragon's frightful presence) to detect the ruse.

Air Subtype

This subtype usually is used for elementals and outsiders with a connection to the Elemental Plane Air. Air creatures always have fly speeds and usually have perfect maneuverability (see the section on Movement).