[LDiCesare]

I thought I would use water gems for grendelkins. But indeed I should have used them for krakens instead. I just thought the grendelkins were worth something, which I don't think they are.
Water nations will also match your kraken with 2 of their own, so I'm not sure it helps land nations in any way. Troll kings have the good idea of being summonable from land for instance, and seem a better deal until you've got an underwater lab, which can be problematic in itself.