Gatekeeper's Crystal

The Gatekeeper's Crystal was a powerful magical device, which, according to legend, had been created by a powerful lich.

Description
When assembled, the device looked like a three-pointed star almost 1 inch (30 cm) in diameter.

Powers
It was made up of three separate shards, each of which were powerful in their own right, but devastating when brought together as a whole. When the crystal was used as a whole, its three shards separated and scatter across a vast area, including other planes.

History
The Gatekeeper's Crystal was used around a thousand years before 1374 DR to destroy the defences of Myth Ondath.

It was used again in 1369 DR by the Harpers to raze Hellgate Keep. One shard was found in the ruins of Hellgate Keep by Sarya Dlardrageth. Sarya found another in 1370 DR in a volcano in Avernus.

In 1371 DR the mages of Reilloch Domayr located one of the shards and kept it in Nandiyerron's Armory in Tower Reilloch. It was stolen by demonic invaders in 1374 DR and returned to Sarya, thus completing the device.

On Alturiak 16, 1374 DR, Sarya used the complete crystal to utterly dispel all of the magical protections of Nar Kerymhoarth and freed almost two thousand fey'ri imprisoned within for the past five thousand years. After that, the crystal disappeared again, but in the same year Araevin Teshurr decided to assemble the crystal one more time when it turned out that it could be used to seal the Waymeet, a powerful interplanar mythal that could create portals between any two planes, of which Sarya and Malkizid tried to gain control in Myth Drannor. The first shard was found in Nar Kerymhoarth in a lair of ophidians, who recognized it as an idol, and was stolen from there by Maresa Rost.