Rot Slinger
Medium elemental humanoid (undead)
Level 22 Artillery XP 4150

Initiative +18        Senses Perception +21
HP 165; Bloodied 82
AC 37; Fortitude 37, Reflex 36, Will 34
Immune disease, poison; Resist 10 necrotic
Speed 6, fly 8 (clumsy)

(⚔) Rotting Claw (standard, at-will) ✦ Necrotic

+25 vs AC; 2d10+5 damage, and the target takes ongoing 10 necrotic damage (save ends).

(➶) Orb of Decay (standard, at-will) ✦ Necrotic

Ranged 10; +25 vs Fortitude; 2d8+8 necrotic damage, and the target is weakened and takes a -2 penalty to saving throws (save ends both).

Alignment Chaotic evil        Languages Abyssal
Str 20 (+16)      Dex 24 (+18)      Wis 20 (+16)
Con 27 (+19)      Int 17 (+14)      Cha 19 (+15)

Published in Monster Manual, page(s) 223, E1 Death's Reach, page(s) 5, E2 Kingdom of the Ghouls, page(s) 11.