Adult Frostforged Wyrm
Large elemental magical beast (dragon)
Level 11 Brute XP 600

Initiative +6        Senses Perception +9; Darkvision
HP 143; Bloodied 71
AC 23; Fortitude 24, Reflex 21, Will 23
Resist 15 cold; Vulnerable charm (a frostforged wyrm that is hit by a charm effect attacks the nearest demon on its next turn)
Speed 7, fly 5

Bite (standard, at-will) Cold

Reach 2; +14 vs AC; 1d8+6 damage plus 1d10 cold damage.

Breath Weapon (standard, recharge ) Cold

Close blast 5; +14 vs Fortitude; 4d8+6 cold damage, and the target is slowed and takes a -2 penalty to attack tolls (save ends both).

Pain Frenzy (immediate reaction, when first bloodied, encounter)

+14 vs AC; 4d10+6 damage, and the target is knocked prone.

Spikes of Pain (see text; encounter)

An adjacent demon can spend a minor action to spur on a frostforged wyrm. The frostforged wyrm takes 1d10 damage and takes a standard action.

Alignment Evil        Languages Abyssal, Draconic
Str 22 (+11)      Dex 13 (+6)      Wis 18 (+9)
Con 23 (+11)      Int 9 (+4)      Cha 16 (+8)

Published in Draconomicon: Chromatic Dragons, page(s) 188.