Tactics for the Swamp (Fortress).

I understand, of course, that you need a water magic expert to teleport through a castle wall, but why is this skill so bad? Magic of any element is useful in its own way, and water is definitely not the worst of them! Just look at Blessing, Clone, Prayer, and even Teleport! I think it's worth taking water magic just for these spells, and if you have fast "mercenary" aliens in your army (like phoenixes) that can quickly neutralize (weaken) enemy "aviation," you can even prefer water magic over earth (with its slowing and resurrection).