Golem, Dragonbone (CR 12)

Large Construct
Alignment: Always neutral
Initiative: +0
Languages: Cannot speak

AC: 17 (-1 size, +8 natural), touch 9, flat-footed 17
Hit Dice: 20d10 (110 hp); DR: 5/magic and adamantine
Fort +7, Ref +7, Will +7
Speed: 40 ft.
Space: 10 ft./5 ft.
Base Attack +15; Grapple +23
Attack: Bite +18 melee
Full Attack: Bite +18 melee and 2 claws +13 melee and 2 wings +13 melee and tail slap +13 melee
Damage: Bite 1d10+4, claw 1d8+2, wing 1d6+2, tail slap 1d8+6
Special Attacks/Actions: Fear aura
Abilities: Str 19, Dex 10, Con -, Int -, Wis 11, Cha 10
Special Qualities: Construct traits, immunity to magic
Advancement: 21-30 HD (large); 31-60 HD (Huge)
Climate/Terrain: Any
Organization: Solitary
Treasure/Possessions: None

Source: Draconomicon

Fear Aura (Su): A dragonbone golem radiates an aura of fear in a 60-foot-radius burst. Any creature with fewer HD than the dragonbone golem is shaken (Will DC 20 negates). The effect lasts for as long as the creature remains within range and for 2d6 rounds afterward. A creature that succeeds on the Will save to resist is immune to that dragonbone golem's fear aura for 24 hours.

Magic Immunity (Ex): A dragonbone golem has immunity to all spells, spell-like abilities, and supernatural effects and abilities.

A dragonbone golem wades into combat without hesitation, weakening opponents' resolve with its fear aura.