[Meglobob]

What is really needed is magic items added to the game that give mass airbreathing, so Oceania can later in the game bring its better troops on land.

Make it constuction 6, requires A2W2 so is hard to get manufacture. Airbreathing 50 would be about right. At least this would allow aquatic creatures on land.

I see nothing wrong with this in a magically rich world of dominions.