"Outer Entity", known as "Outer God" ( (ガイ) (シン) Gaishin) in the OCG, is an archetype of Fiend Xyz Monsters based on the Outer Gods from H. P. Lovecraft's Cthulhu Mythos, and is directly related to the "Elder Entity" and "Old Entity" archetypes, the three each being a subtype of the larger "Entity" series. Currently, its only support card is "Forbidden Trapezohedron".

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