Darkness
Shadow creature
Greece, Egypt or Persia. These 3 are reals civ from the ancient times with ancient age UU, so that's nice from a historic perspective. None of the three have been played recently in GOTM. My personal favourite would be Greece, becauseit's the "truest" mediteranian civ of the 3, the other 2 are more middle-east...


Or have land-based Atlantians that have galleys that can cross the ocean without navigation. Here's a good place for the donut shaped world with a few islands in the middle.