Ghoul ravager

Ghoul ravagers are undead carrion eaters who haunt the graveyards and battlefields that bore them, still bearing the rotting flesh they once wore in life.

Special abilities
A ghoul ravager has +2 turn resistance as well as the usual undead immunities to critical hits, death magic, disease, level drain, ability drain, mind-affecting spells, paralysis, poison, and sneak attacks.

The ghoul ravager's claws and bite inflict ghoul rot on-hit. In addition, this creature can use an aura of unnatural once per day, and is capable of casting haste twice per day at caster level 9.