Praesidium Protectiva
Believed to contain shards of armour worn by the Emperor Himself, this shield can be used to defend against enemies assaulting the bearer. A model equipped with a Praesidium Protectiva may take a 4+ Invulnerable save in an assault instead of her normal armour save. The save may only be used against one opponent per turn (the defender chooses which one). Although not a weapon as such, a Praesidium Protectiva must be carried in one hand and therefore takes the place of one single-handed weapon.