Marlspire of Najara

The Marlspire of Najara, a crown given to the Najaran naga by the yuan-ti of the Hss'tafi tribe in -320 DR as a symbol of loyalty, was worn by Terpenzi and all successive kings through the reign of Jarant.

Abilities
Far from being a mere symbol of office, the Marlspire had powerful magical capabilities (some of which only functioned when it was worn by a reptile.) If a non-reptile wore the Marlspire, that creature found itself more vulnerable to the attacks of reptiles.