Dragon, Amethyst Young Adult (CR 11)
AC: 27 (-1 size, +17 natural, +1 Dex), touch 10, flat-footed 26
Hit Dice: 18d12+72 (289 hp); DR: 5/magic
Fort +15, Ref +11, Will +13
Speed: 40 ft., fly 150 ft. (poor), burrow 20 ft., swim 10 ft.
Space: 10 ft./5 ft. (10 ft. with bite)
Base Attack +18; Grapple +28
Attack: 1 Bite +23, 2 claws +18, 2 wings +18, 1 Tail Slap +18 melee; Breath +23 ranged
Damage: 1 bite 2d6+6, 2 claws 1d8+3, 2 wings 1d6+3, 1 tail slap 1d8+9, Breath weapon 10d8 (23)
Special Attacks/Actions: Breath Weapon 10d8 (23); fear (DC 21), SR 19
Abilities: Str 23, Dex 12, Con 19, Int 14, Wis 15, Cha 14
Special Qualities: Force resistant, planar travel, poison immunity, stomp, CL 3
Feats: #Feats: 7
Skills: Skill points: 42
Advancement: 19-20 HD (Large)
Climate/Terrain: Inner Planes, underground
Organization: Solitary or clutch (2-5)
Treasure/Possessions: Double Standard
Monster Manual II
Bite: The dragon can use its bite snatch opponents. Bite attacks use the full attack bonus.
Claw: The dragon can use its claws to snatch opponents. Claw attacks are at -5 to the attack bonus.
Wing: The dragon can slam opponents with its wings, even when flying. Wing attacks are at -5 to the attack bonus.
Tail Slap: The dragon can slap one opponent each round with its tail. A tail slap is at -5 to the attack bonus.
Breath Weapon (Su): An amethyst dragon has one breath weapon, a line of concussive force (Reflex save for half damage, DC 23, 10d8 damage). It can choose to deal subdual damage instead of normal damage. 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.
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.