An Air-Rune is a basic elemental rune used in the magic skill to cast many different spells. It is a common drop by many monsters and can be bought from many shops such as Aubury's shop in Varrock, Betty's shop in Port Sarim and the Wizards' Guild in Yanille. Air-runes are required to cast every missile spell except Iban blast as well as many teleportation spells. The Staff of Air is an item that acts as an infinite amount of air-runes when wielded.