Bardic Knowledge or Knowledge: Ancient History (DC 40)
A dozen good-aligned Medium humanoids must be freshly killed and their bodies carefully drained of blood in order to fill the cauldron to its capacity. Once it is filled, this item can confer its benefits upon up to fifty Medium creatures before it must be refilled. When filled with blood and set above a fire, the cauldron's magic activates. Any living creature that steps into the bubbling blood and submerges within it gains supernatural immunity to most physical attacks. The creature(s) gains fantastical resistance to attacks, both physical and magical, which can only be overcome using adamantine weapons. This supernatural ability lasts for two weeks, and the creature’s skin or fur acquires a bright red color. Anyone using this item automatically changes forever, turning them dark and irrational. If a person enacts such a bath within the cauldron, that person will become evil and corrupt, seeking the death of others to quench its bloodlust.
Major Artifact (Evil): Strong transmutation; CL 30th; Weight 200 lbs.