[Nikelaos]

actually you don't really need to be careful with magic, as a majority of cold spells (ice bolt for instance) can't be used underwater, it may also be good to note that a forgiving father and an angakok leading a communion can has the posibility of being able to cast any major battlefield buff in the game, this includes will of the fates, fog warriors, flamming arrorws, army of lead and the all important antimagic.

this means in the late game you can turn those hordes of easily massed seal hunters into a great force to be reckoned with and your mages have high enough hp to resist a rain of stones counter.

On the flip side your research is mediocre at best and your angakoks are capital only and over priced, coupled with resource intensive units who melt in the sun your progress, especially into enemy dominions, should mostly be quite slow.

i'n currently doing a MP as atlantis so i'll soon see how well they handle.