Draakhorn

The Draakhorn was an artifact that was a gift from Tiamat to dragonkind during the war between dragons and giants.

Powers
The Draakhorn alerted all chromatic dragons within. However, the Cult of the Dragon corrupted this power in order to call them to the Well of Dragons. Additionally, it discomfited all normal animals within a few miles when blown.

History
The Draakhorn was made from a horn of Ephelomon, once a red dragon consort of Tiamat.