"The knight"Race: Deamon.
Appearance: A sentient suit of armour, engulfed in ash and flames which whirls around it even if no wind is present.
It holds a sickening black longsword with random prongs and protrusions along its edge, it looks menacing and has a cloud of black ash around it. The knight usually holds it by the handle in front of him with the blade down with both its hands.
Information: The knight is a bound deamon, its purpose to end lives now forcefully wrought to protecting them by a deamonologist with powerful wards and pentagrams. It cannot bear harm to humans, nor fight unless given command by one which the strict rules deem appropriate.
While a monstrously strong and powerful fighter and deamonic general, it will never fight. Barely even if attacked.
Being a deamonic steel armour, it is mostly invulnerable to normal means. But weapons designed to combat deamons and evil will work very well.
Being a deamon means it never eats, the wards will probably fade and the deamonic energy cannot sustain it forever. But it should be stable for the next thousand years and a day.
The sword
"Azz Kaugra'mer" decays and fester the wound of anything it cuts, being a deamonic weapon it is nearly indestructible to normal means and never becomes dull.
The rules: The deamon shall never harm a human being.
The deamon shall follow any commands given by a human being.
The deamon shall have a master, whose orders overrides the second but not the first rule.
The deamon shall never kill without order.
The deamon shall never destroy without order.
The deamon shall never harm without order.
The binding: The deamon is bound to a dagger, whoever holds the dagger is its master. The deamon cannot touch the dagger.
The dagger is a regular dagger with decor, but the evil of the binding makes black ash pour and swirl from between its parts. The pentagrams upon its surface shine red.
By destroying the dagger, the binding is broken and the deamon is free. The deamon does not say its name for if someone holds the name of a deamon that someone holds power over that deamon.
The binding lasts for a millenia and a day.