Use this method as an alternative to Death Saves for any edition of DnD and put a little bite into it.
The Vulture Priests are the enemy of knowledge and enlightenment. They seek to bring the eternal silence, the end of all things. Decay and obedience is their only god.
Armor Class 6 
Hit Dice 1 (4hp)
Attacks 1 × Beak (1d4 or by weapon)
THAC0 19 
Movement 120’ (40’)
Saving Throws D12 W13 P14 B15 S16 (1)
Morale 8 (11 when at their temple)
Number Appearing 2d4 (1d6 × 10)
Treasure Type D
Immune to the Divine: The spells and powers of clerics and paladins have no effect on them.
Weapons: They frequently use wickedly curved daggers, which they use for sacrificial purposes.
Soul Clouders: There is a 10% chance that any Vulture Priest can use the sleep spell once per day. The targets are still awake, but they are beset by such a deep depression that it has the same effect as sleep. They may only watch what unfurls around them.