The Monster Manual describes Displacer Beasts as a “monstrous predator that takes its name from its ability to displace light so that it appears to be several feet away from its actual location. A displacer beast resembles a sleek great cat covered in blue-black fur. The beast’s eyes glow with an awful malevolence that persists even in death.”

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The Monster Manual describes Kuo-toa as “fishlike humanoids that once inhabited the shores and islands of the surface world. Long ago humans and their ilk drove the kuo-toa underground, where they dwell in everlasting night. Kuo-toa can no longer abide daylight."

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