air orb

An Air Orb is a glass orb that has been charged at the Air Obelisk with level 66 Magic, 30 air runes, 3 cosmic runes, and an uncharged orb generating 76 magic experience using the Charge Air Orb spell (normal spellbook). It can be used to construct an air battlestaff by combining it with a battlestaff, giving you 137.5 crafting experience (requires level 66 Crafting). https://www.webtechmantra.com/osrs-gold-with-air-orbs/