The Mesopotamian Triclops is a creature with three eye sockets arranged like the points of a triangle and a skull that tapers to a blunt point. They are highly resistant to magic and have been known to glimpse the future.
The Museum of Unnatural History at Lost Mesa contained, among other things, the skeleton of a Mesopotamian Triclops.
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- Grip of the Shadow Plague (Fablehaven #3)