Dragon Scale of Resistence

Black Dragon Scale of Resistance.  
In addition to the properties from the magic item pdf, this suit of armor has the following properties:
Properties: Guardian (+2 to init), the nature of the armor is prophecy.  This set of armor is dwarven in nature and has dwarven symbols worked into the design.  It is not easily broken, torn, or otherwise damaged.
Quirk: This armor is hungry for blood.  It only functions if fresh humanoid blood has been applied to it the previous day.  It only requires a drop though.