Dragon, Sand Very Old (CR 18)

Huge Dragon (Earth)
Alignment: Always chaotic neutral
Initiative: +0; Senses: blindsense 60 ft., darkvision120 ft., low-light vision, keen senses, and tremorsense 60 ft.
Languages: Draconic

AC: 36 (-2 size, +28 natural), touch 8, flat-footed 36
Hit Dice: 30d12+135 (310 hp); DR: 15/magic
Fort +32, Ref +18, Will +23
Speed: 30 ft., burrow 20 ft., fly 120 ft. (clumsy)
Space: 20 ft./10 ft.
Base Attack +27; Grapple +46
Attack: 1 bite +36, 2 claws +31, 2 wings +31, 1 tail slap +31, 1 crush +31
Damage: 1 bite 2d8+11, 2 claws 2d6+5, 2 wings 1d8, 1 tail slap 2d6, 1 crush 2d8
Special Attacks/Actions: Breath weapon 16d4 (DC 28)
Abilities: Str 32, Dex 11, Con 21, Int 18, Wis 21, Cha 18
Special Qualities: Immunity to fire, Haboob, Dispel water, Wall of sand, Frightful Presence DC27, SR 24
Feats: #Feats: 11
Skills: Skill points: 126
Advancement: 28-29 HD
Climate/Terrain: Warm Deserts
Organization: Solitary (1 dragon, any age), clutch (1d4+1 wyrmlings, very young, young, juvenile, or young adults), family (pair of mature adults and 1d4+1 offspring)
Treasure/Possessions: Double Standard

Source: Sandstorm

Breath Weapon (Su): A sand dragon has one type of breath weapon, a cone of grit similar to a flaywind.

Spell-Like Abilities: At will - haboob; 3/day - dispel water, wall of sand

Skills: Concentration, Hide, Intimidate, Listen, Move Silently, Sense Motive, Spot, and Survival are considered class skills for sand 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.