The Cobra Crown is a fictional items in the Conan Mythos, which was created in 1971 by L. Sprague de Camp and Lin Carter. It appeared in their Conan novel, Conan the Buccaneer. The item would first appear in Marvel Comics in 1979 in issue #40 of the 1st volume of the Savage Sword of Conan comic book series.
The Cobra Crown was created by the Serpent Men of Valusia, who used it to create an empire on Earth. When they were later overthrown by men, it was lost for millennia, and ended up in the temple of Tsathoggua, an Old One. It would eventually be found during the time of Conan, only to be lost again for millenia before it was found again by agents of Roxxon Energy in the modern era.
With the Cobra Crown, one can rule the minds of thousands, from animals (e.g. a snake or lion) to human beings. The crown warns the user of those who plan to ambush or assassinate him, resulting that no one threatening the wearer can come within a catapult shot. To access the power of the crown, the individual needs to be in direct contact with the crown.