Eye of Horus
From Tardis Wiki, the free Doctor Who reference
The Eye of Horus was Osirian device that beamed a signal that suppressed the renegade Osiran known as Sutekh and held him prisoner inside a pyramid on Earth. This artefact resembled a round gend gem and was located in a pyramid on Mars which was safeguarded with multiple traps, including Osirian service robots loyal to Horus. (DW: Pyramids of Mars)
The Cult of the Black Pyramid, a religious organisation that worships Horus were searching for The Eye. (VD: The Curse of the Scarab)
