Luthvaerynn
Medium aberrant magical beast (shapechanger)
Level 15 Elite Artillery XP 2400

Initiative +11        Senses Perception +13; low-light vision
HP 232; Bloodied 116
Regeneration 10 (if Luthvaerynn takes damage from a silvered weapon, its regeneration doesn't function on its next turn.)
AC 29; Fortitude 27, Reflex 27, Will 29
Immune poison
Saving Throws +2
Speed 2 (clumsy), legged form 6, fly 6 (hover)
Action Points 1

(⚔) Slam (standard, at-will)

+22 vs AC; 1d6+4 damage.

✻ Nightmare Slumber (standard, encounter) ✦ Charm, Psychic

Area burst 4 with in 10; targets enemies; +19 vs Will; 1d8+7 psychic damage, and the target is dazed (save ends). First Failed Save: The target is unconscious (save ends). Aftereffect: The target is dazed (save ends).

➶ Sapping Ray (standard, at-will) ✦ Psychic

Ranged 10; +18 vs Will; 1d8+7 psychic damage, and the target is weakened (save ends).

➶ Pain Ray (standard, at-will) ✦ Psychic

Ranged 20; +18 vs Will; 3d8+7 necrotic damage, and the target gains vulnerable 10 psychic (save ends). The target cannot attempt a save against this effect while within 10 squares of Luthvaerynn.

⚔ Mangle (standard, recharge ⚅

Luthvaerynn makes two melee basic attacks against the same target. If both hit, it makes a secondary attack against that target

Secondary Attack 1d8+4 damage (no attack roll needed).

Change Shape (minor; at-will) ✦ Polymorph

Luthvaerynn can alter its physical form to appear as any Small, Medium, or Large creature.

Alignment Chaotic evil        Languages Abyssal, Chondathan, Common, Deep Speech
Skills Arcana +17, Bluff +19, Diplomacy +19, Insight +13
Str 12 (+8)      Dex 18 (+11)      Wis 12 (+8)
Con 20 (+12)      Int 21 (+12)      Cha 25 (+14)

Published in Forgotten Realms Campaign Guide, page(s) 258.