A sword made of pure shadow appears in your hand. You are able to immediately attack with it. It deals 1d8 points of damage per hit and cannot be stopped by physical armor or shields, passing through them as if they were not there. Armor, shield, and enhancement bonuses to Armor Class do not count against this weapon. Dexterity, deflection, dodge, natural armor, and other bonuses still apply to Armor Class. A shadow blade cannot harm undead, constructs, or objects. Weapon proficiency does not affect your skill with the blade.