Amulet of Venom

A chained necklace whose center piece is a Kobra made of fine steel.                                                           Whosoever wears this necklace would be granted the ability to wildshape into a Giant poisonous snake once the users hit points goes to 0 while in the form the Amulet can't be used again until a long rest

Notes: Shapechanging, Necklace, Jewelry