Ahghairon's dragonward

Ahghairon's dragonward was a powerful mythal cast by the famous mage Ahghairon over the city of Waterdeep.

Effects
Centered under Ahghairon's Tower, the mythal projected a permanent dome in diameter, which encompassed the city's borders in their entirety as of 1372DR. Parts of the dock ward of Waterdeep closest to sea level were beneath the bottom edge of the dragonward ' and thus not protected by it. Undermountain, beneath the city, was unaffected by the Dragonward. In 1492DR, the effect did not extend to the harbor. Any creature with draconic blood that tried to enter the city was overcome with an overwhelming urge to leave the area, never to return. However, any draconic creature that touched the Dragonstaff of Ahghairon was able to bypass the dragonward for as long as the staff's wielder allowed or until the creature was struck by the staff.

History
In the mid–11 century DR, Ranressa Shiard returned as a hero from her journeys to Waterdeep atop the mighty copper dragon Galadaeros. Although she was welcomed home, the appearance of her mount flying over the city unsettled the majority of the populace. Ahghairon crafted this mythal to allay their fears.