Druidess, you'll be transforming into that blue whale in the book. I'll use my illusion magic to help you visualize it better. You'll be harrying any trade ships belonging to my uncle. Once we have the Duchess in our hands and the royal coffers in my purse, I'll send a massive gift to our allies in the North for being such good friends as to lend us their fleet. We'll impose a blockade on the kingdom, only allowing ships not affiliated with the king to come in. Hopefully we can choke him out.
Oh, and you ambassadors can have the duchess. Marry her to your king or oligarch or something, good riddance for me, and you get a connection to our kingdom.
.. The hell?! The blues are here?! Damn they work fast. Once again, SMOK-oh, they brought wind mages now.