Basilisk

The original Basilisk of clasical traditionwas a small venomous serpent whose throat never touched the ground, with a crest upon its head that gave it its name. 'Basileus' is the Greek for 'king,' and this ensured that the snake was remembered as the king of all serpents. Everything about the Basilisk was poisonous.Its bite, glance, saliva, and smell were all fatal. In addition, it could spit venom at flying birds. The venom of the Basilisk could rot the fruit on trees and pollute water. It was concidered to be the cause of the Libyan and Middle Eastern deserts. Pliny described the Basilisk as a snake with white spots or stripes with fiery breath and a death-dealing cry, that had the ability to drive people mad with its poison. The Basilisk shares with Medusa the ability to strike onlookers dead by its glance alone. There were certain strategies that helped protect the traveller during encounters with it: you might carry a crystal globe to reflect back the petrifying stare, you could carry a weasel which can give as good as it gets by way of venomous biting, or you could take a cockerel with you, since its crowing would send the Basilisk into fits.

"The magical property of the Basilisk is primarily the power to protect whatever you want kept safe from theft of attack. Many Gnostic seals of the late classical era carry the image of the basilisk in order to ward off evil, in much the same way that the military breastplates carry a gorgonian (an image of the Meedusa's head).; Because one of the main antidots to the Basilisk was to carry a cockerel, the creatue changed its shape in medieval legend, becoming a serpent with a cockerel's head, neck, and legs, but retaining its serpent tail. Valian forms give it a human face on a cockerel's head and dragon's wings. A great brass cannon was named after it in Tudor times in the hope that enemies would be stricken down as fatally as though by the venom of the beast itself. For Christian, the Basilisk was an ultimat symbol of the devil in his form as the one who tempted our first parents, Adam and Eve: beautiful in form and colour but deadly to the human race.

"A serpentine Basilisk appears in J.K. Rowling's Harry Potter and the Chamber of Secrets, where Harry finally defeats it with the sword brought to him by Fawks, the Phoenix that lives in Professor Dumbledore's study. He pierces the Basilisk in the eye, depriving him of his petrifying stare."

-The Element Encyclopedia of Magical Creatures