Memory:Water grue

You'd say that was a huge fish coming your way, but no fish has four legs and no fish has that many horns. You can't seem to get a good look at it though, as it's hiding deep in the shadows. For such a large critter it's very stealthy... you've barely heard it make a sound. The nails on that thing could easily make sure you can't tell anyone else about this monstrosity either... A shadow rises out of the water and edges closer. It seems made of the gloom in the abysses of the deep sea, in the depth of swamp holes and in the lightless lakes and rivers under the earth, still another darkness seems to dwell in there, a darkness that has filtered into this world and that now taints the dark places, lurking and growing until it may one day rise to swallow the light.