Requiem

Requiem is an extremely rare condition, it is known by some as the 'one death'. It is such a rare condition that there are only two demons known to actually possess the condition. The condition makes a demon invincible to death, except by one method of execution, meaning that if a demon can only be killed by Decapitation, then drowning or mutilation will barely even injure the demon in question. The only demons known to possess this condition are Baroth and Dracoryuzarn, however there are others who are believed to possess it.

Requiem is not to be confused with a demonic species having only one method of being killed, as this method is shared throughout their entire demon race. For example a demon race who can only be killed by drowning, will be impervious to all other methods of execution, however if a single member of that race had a requiem then even drowning would not kill him, only the condition of his requiem would do the job.

So far there is only one known way of acquiring a requiem, that way is a prophecy. If there are any other ways of acquiring a requiem, they are currently unknown.