Horn Of Valhalla

This magic instrument comes in four varieties. Each appears to be normal until someone speaks its command word and blows the horn. Then the horn summons a number of human barbarians to fight for the character who summoned them. Each horn can be blown just once every 7 days. Roll d% and refer to the table above to see what type of horn is found. The horn's type determines what barbarians are summoned and what prerequisite is needed to use the horn. Any character who uses a horn of Valhalla but doesn't have the prerequisite is attacked by the barbarians she herself summoned.