Keeper
Medium shadow humanoid (shapechanger)
Level 17 Lurker XP 1600

Initiative +18        Senses Perception +17; blindsight 20
HP 128; Bloodied 64
AC 31; Fortitude 29, Reflex 30, Will 28
Immune charm, fear, sleep
Speed 6

(⚔) Shadowformed Weapon (standard, at-will) ✦ Weapon

The keeper attacks with a weapon it forms out of shadow; +23 vs AC; 2d8+3 damage, and the target is marked until the end of the keeper's next turn. A keeper can only have one creature marked by this attack at a time. The condition ends if the keeper uses its dissolution power.

ᗕ Caustic Breath (standard, encounter) ✦ Acid

Close blast 3; +20 vs Fortitude; 3d6+5 acid damage, and the target is blinded (save ends). Aftereffect: The target takes a -2 penalty to attack rolls (save ends).

Dissolution (standard; recharge ⚄⚅) ✦ Healing, Polymorph

The keeper dissolves into a dark, viscous liquid. While in this form, the keeper is immune to the restrained and immobilized conditions, and it ignores difficult terrain. The keeper gains a +5 bonus to all defenses, and it regains 10 hit points at the end of each of its turns. The keeper gains a climb speed and swim speed equal to its base walking speed. The keeper can take only move actions and minor actions. It can stay in this form indefinitely, and it can return to its normal form as a move action.

Marked Advantage

The keeper deals an extra 2d6 damage against a target it has marked.

Alignment Unaligned        Languages Common
Skills Stealth +19, Thievery +19
Str 17 (+11)      Dex 22 (+14)      Wis 19 (+12)
Con 20 (+13)      Int 18 (+12)      Cha 9 (+7)

Equipment: trench coat, smock, goggles

Published in Manual of the Planes, page(s) 134.