Dragon, Brass Old (CR 16)

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

AC: 32 (-2 size, +24 natural), touch 8, flat-footed 32
Hit Dice: 25d12+125 (287 hp); DR: 10/magic
Fort +19, Ref +14, Will +17
Speed: 60 ft., fly 200 ft. (poor), burrow 30 ft.
Space: 15 ft./10 ft. (15 ft. with bite)
Base Attack +25; Grapple +42
Attack: 1 Bite +32, 2 claws +27, 2 wings +27, 1 Tail Slap +27, 1 crush +27 melee; Breath +32 ranged
Damage: 1 bite 2d8+9, 2 claws 2d6+4, 2 wings 1d8+4, 1 tail slap 2d6+13, 1 crush 2d8+13, Breath weapon 8d6 (27)
Special Attacks/Actions: Breath weapon, fear (DC 23), SR 21
Abilities: Str 29, Dex 10, Con 21, Int 16, Wis 17, Cha 16
Special Qualities: Control winds, Suggestion, Fire subtype, speak with animals, Endure elements, CL 11, Can also cast cleric spells and those from the Chaos and Knowledge Domains as arcane spells
Feats: #Feats: 9
Skills: Skill points: 81
Advancement: 26-27 HD (Huge)
Climate/Terrain: Temperate and warm desert, plains, and underground
Organization: Solitary, pair, or family (1-2 and 2-5 offspring)
Treasure/Possessions: Double Standard

Source: Monster Manual

Breath Weapon (Su): A brass dragon has two types of breath weapon, a line of fire (8d6 damage Reflex save for half damage DC 27) or a cone of sleep. Creatures within the cone must succeed at a Will save (DC 27) or fall asleep, regardless of HD, for 1d6 rounds plus 8 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.

Fire Subtype (Ex): Fire immunity, double damage from cold except on a successful save.

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 240 feet are subject to the effect if they have fewer HD than the dragon (25).

A potentially affected creature that succeeds at a Will save (DC 25) 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.

Fire Subtype

A creature with the fire subtype has immunity to fire. It has vulnerability to cold, which means it takes half again as much (+50%) damage as normal from cold, regardless of whether a saving throw is allowed, or if the save is a success or failure.