I was trying to stat up this item, and was looking for some feedback, thanks in advanced.
Red Marble Sword [+5]
Description: A sword that chooses a good knight to carry out justice, following him till his death. The sword deals great misfortune to those other than the chosen knight who dare to wield it.
Musts: Must be good in order to be the chosen owner.
[-0] Purpose: To seek justice, in the hands of a worthy knight.
[-2] It is what it is: Longsword made of red marble, weapon 5
[-0] Unbreakable. As an item of power, this item cannot be broken except with a magical ritual that opposes its nature.
[+2] One-Time Discount. A sword is hard to hide.
[+3] The Catch: The sword chooses an owner, and if someone other than the owner wields it, terrible things happen. (i.e. accidently slaying ones brother, or mistakenly maiming a friend).
[+1] Purity of Heart: If the owner is not pure of heart, the sword will do mildly annoying things, like leap from the owner's hands during combat.
[+1] Inescapable Bond: The sword will always find a way back to the owner by compeling as many inoccent people as it needs in order to return to the owner's hands.
The knight has to be good, and if he robs a bank, or even snubs a beggar, the knight will need to go to confession, or do a good deed, in order to purify his heart. The amount the sword acts out, or the probability the sword acts out is proportional to the amount of impurity.