Phoenix Pyre on 13 reinvig and 20 magic resist is kind of a dog of the female persuasion to crack
The real problem, however, which any of your future enemies will also inevitably face, is that I can't damage you. I can't lay siege to you, and any goons I bring into the water will get slaughtered by the Ironbane/Friendly Currents/lots and lots of Deep Ones combo. SCs face significant penalties underwater as well.
I hope, for their sake, that the other nations realize this.