Breogan’s Mirror

Origin
Breogan was a Celtic king in Spain who wanted to see his entire kingdom, so he rebuilt the Tower of Hercules to view all in his realm. He later happened upon a mirror, washed ashore by the tides, that let him view Ireland through its lens. He sent his son, Ith, on an expedition to the island and was only seen again when his body washed up onshore. Ith’s death angered him so much that he called upon 36 chieftains to invade and take over Ireland.

During the construction of Warehouse 13, it accidently got out of its crate and activated Peter III of Russia's Toy Soldiers, Turgut Reis' Mirror Armor and Ctesibius' Water Clock. All the artifacts were neutralized two weeks later.

From the 1970s to 1990s, the US government requested to use it for research on Project Stargate; each request was denied.

Effects
Grants the ability of second sight, a form of extrasensory perception. When viewed through with a light illuminating it, the mirror will show any location the user desires, making it one of the first scrying mirrors. It seems to allow sounds to transmit when shone in the sunlight and can act as a physical gateway between the two points on special astronomical days, such as the equinox and solstice.

If overused or used with immoral intent, the mirror will fill the user’s throat and lungs with seawater, drowning them on dry land.