Curst monk

The eyes of a curst monk show pain and madness. Such creatures suffer powerful magical curses that bind them to undeath. They know peace only when destroyed.

Special abilities
A curst monk has 100% immunity to cold and fire damage, as well as most of the usual undead immunities, specifically immunity to critical hits, disease, level drain, ability drain, mind-affecting spells, paralysis, poison, and sneak attacks. (Immunity to death magic is missing from this list.) Furthermore, this creature regenerates one hit point per round, has a spell resistance of 12, and has a turn resistance of 10.