Ghast

Ghasts: More deadly and cunning than their lesser kin, the ghoul, these undead carrion eaters have the added ability to paralyze their victims.

A ghast has the usual undead immunities to critical hits, death magic, disease, level drain, ability drain, mind-affecting spells, paralysis, poison, and sneak attack.

The ghast's creature weapons have on monster hit effects; the two claw attacks inflict ghoul rot, while the bite stuns. In addition, this creature can use tyrant fog zombie mist once per day.