Pirates of the Mysterious Islands (MI, 2006) featured the new Mercenary faction and introduced Submarines. It was not a great set, as the artwork seemed dull and the ships were worse than the ones from DJC. In addition, the Mercenaries are the worst of the minor factions since they cannot dock at their own home island! However, you’ll enjoy the set if you like subs and the tie-ins to Jules Verne’s 20,000 Leagues Under the Sea.