Dragon, Silver Wyrm (CR 23)
AC: 42 (-4 size, +36 natural), touch 6, flat-footed 42
Hit Dice: 37d12+333 (573 hp); DR: 20/magic
Fort +29, Ref +20, Will +29
Speed: 40 ft., fly 200 ft. (clumsy)
Space: 20 ft./15 ft. (20 ft. with bite)
Base Attack +37; 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 22d8 (36)
Special Attacks/Actions: Breath Weapon, fear (DC 37), SR 30
Abilities: Str 39, Dex 10, Con 29, Int 28, Wis 29, Cha 28
Special Qualities: Control weather, Control winds, Fog cloud, Feather fall, Cold and acid immunity, cloud-walking, polymorph self, CL 17. Can also cast cleric spells and those from the Air, Good, Law, and Sun domains as arcane spells.
Feats: #Feats: 13
Skills: Skill points: 339 and plus Jump 37
Advancement: 38-39 HD (Gargantuan)
Climate/Terrain: Temperate and warm mountains and underground
Organization: Solitary, pair, or family (1-2 and 2-5 offspring)
Treasure/Possessions: Double Standard
Alternate Form(Su): A silver dragon can assume any animal or humanoid form of Medium size or smaller as a standard action three times per day. A dragon can remain in its animal or humanoid form until it wishes to assume a new one or return to its natural form. A true seeing spell or ability reveals the creature's natural form. A creature using alternate form reverts to its natural form when killed, but separated body parts retain their shape. A creature cannot use alternate form to take the form of a creature with a template.
Breath Weapon (Su): A silver dragon has two types of breath weapon, a cone of cold (22d8 damage, Reflex save for half DC 36) or a cone of paralyzing gas. Creatures within the latter must succeed at a Fortitude save (DC 36) or be paralyzed for 1d6 rounds plus 11 rounds. Using a breath weapon is a standard action. Once a dragon breathes, it can't breathe again until 1d4 rounds later. If the dragon has more than one type of breath weapon, it still can breathe only once every 1d4 rounds. A blast from a breath weapon always starts at the dragon's mouth and extends in a direction of the dragon's choice.
Cloudwalking (Su): The dragon can tread on clouds or fog as though ground. The ability functions continuously but can be negated or resumed at will.
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 330 feet are subject to the effect if they have fewer HD than the dragon (37).
A potentially affected creature that succeeds at a Will save (DC 37) 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.
This subtype usually is used for elementals and outsiders with a connection to the Elemental Plane Air. Air creatures always have fly speeds and usually have perfect maneuverability (see the section on Movement).