Dragon, Sapphire Adult (CR 24)

Gargantuan Dragon (Earth)
Alignment: Always lawful neutral
Initiative: +6 (Dex); Senses: blindsense 60 ft., darkvision120 ft., low-light vision, and keen senses
Languages: Draconic

AC: 47 (-4 size, +35 natural, +6 Dex), touch 12, flat-footed 41
Hit Dice: 38d12+304 (513 hp); DR: 20/magic
Fort +29, Ref +27, Will +27
Speed: 40 ft., fly 200 ft. (clumsy), burrow 15 ft., swim 10 ft.
Space: 20 ft./15 ft. (20 ft. with bite)
Base Attack +38; Grapple +63
Attack: 1 Bite +47, 2 claws +42, 2 wings +42, 1 Tail Slap +42, 1 crush +42, 1 Tail sweep +42 melee; Breath +47 ranged
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, Breath weapon 24d4 (37)
Special Attacks/Actions: Breath Weapon 24d4 (37); fear (DC 35), SR 31
Abilities: Str 37, Dex 22, Con 27, Int 22, Wis 23, Cha 22
Special Qualities: Electricity immunity, spider climb, sense psychoportation, skate, stone shape, teleport, wall of stone, move earth
Feats: #Feats: 13
Skills: Skill points: 234
Advancement: 39+ HD (Gargantuan)
Climate/Terrain: Inner Planes, underground
Organization: Solitary, pair, or family (1-2 and 2-5 offspring)
Treasure/Possessions: Double Standard

Source: Monster Manual II

Breath Weapon (Su): A sapphire dragon breathes a cone of nearly inaudible sonic energy. In addition to making a Reflex saving throw (DC 24) against sonic damage (12d4), each creature within the cone must succeed at a Will save (same DC) or become panicked for 1d4 rounds. Using a breath weapon is a standard action. Once a dragon breathes, it can't breathe again until 1d4 rounds later. A blast from a breath weapon always starts at the dragon's mouth and extends in a direction of the dragon's choice.

Frightful Presence (Ex): An adult dragon can unsettle foes with its mere presence. The ability takes effect automatically whenever the dragon attacks, charges, or flies overhead. Creatures within a radius of 180 feet are subject to the effect if they have fewer HD than the dragon (20 HD).

A potentially affected creature that succeeds at a Will save (DC 23) remains immune to that dragon's frightful presence for one day. On a failure, creatures with 4 or fewer HD become panicked for 4d6 rounds and those with 5 or more HD become shaken for 4d6 rounds.

Dragons ignore the frightful presence of other dragons.

Earth Subtype

This subtype usually is used for elementals and outsiders with a connection to the Elemental Plane of Earth. Earth creatures usually have burrow speeds, and most earth creatures can burrow through solid rock.