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523px-The Eye of Hell

Ocularis Infernum.

The Ocularis Infernum (Latin for the "Eye of Hell") is an eye located in Hell that, once opened, will allow its user (whoever is able to control it, that is) the power to see everything, "the past and future, Heaven and Earth, the blessed and the damned", essentially giving the user a god-like power to dominate mankind.

Basileus's Machine was designed to open the Ocularis Infernum and give the machine's user control over it by using the ghosts of the Black Zodiac. However, once the machine was destroyed, no one could access the power of the eye to use it for world domination.