By Royal Decree is the third scenario in Revolt of the Beastmasters, the seventh part of Heroes Chronicles. Baron Paglon fled from his castle when Tarnum's army approached it, so they followed him when the Baron fortified himself in another. Mad King Gryphonheart warned Baron Paglon that if he failed, he would be stripped of his title. When Tarnum approached Baron Paglon's castle, the Baron promised him half his wealth if he let him go free, but Tarnum refused and conquered his opponent.