Dragon, Copper Adult (CR 13)

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

AC: 28 (-1 size, +19 natural), touch 9, flat-footed 28
Hit Dice: 20d12+80 (210 hp); DR: 5/magic
Fort +16, Ref +12, Will +15
Speed: 40 ft., fly 150 ft. (poor)
Space: 10 ft./5 ft. (10 ft. with bite)
Base Attack +20; Grapple +30
Attack: 1 Bite +25, 2 claws +20, 2 wings +20, 1 Tail Slap +20, 1 crush +20 melee; Breath +25 ranged
Damage: 1 bite 2d6+6, 2 claws 1d8+3, 2 wings 1d6+3, 1 tail slap 1d8+9, Breath weapon 12d4 (24)
Special Attacks/Actions: Breath Weapon, fear (DC 23), SR 21
Abilities: Str 23, Dex 10, Con 19, Int 16, Wis 17, Cha 16
Special Qualities: Stone shape, Acid immunity, spider climb, CL 7, *Can also cast cleric spells and those from the Chaos, Earth, and Trickery domains as arcane spells.
Feats: #Feats: 7
Skills: Skill points: 66
Advancement: 21-22 HD (Large)
Climate/Terrain: Temperate and warm desert, hill, mountains, and underground
Organization: Solitary, pair, or family (1-2 and 2-5 offspring)
Treasure/Possessions: Double Standard

Source: Monster Manual

Breath Weapon (Su): A copper dragon has two types of breath weapon, a line of acid (12d4 damage Reflex save for half damage DC 24) or a cone of slow gas. Creatures within the must succeed at a Fortitude save (DC 24) or be slowed for 1d6 rounds plus 6 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): A young adult or older 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).

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.