One lap charges 27 unpowered orbs and uses 81 cosmic runes, and takes approximately 185 seconds. It is possible to gain up to 40,000 Magic experience per hour using the charge air orb spell.
Recasting the spell on the obelisk as soon as an orb has been charged can cancel the cooldown animation, improving the speed at which orbs can be charged by up to 3 ticks, effectively cutting the time spent to charge an orb by 1/3.
This method involves going into level-7 Wilderness, so players may be attacked by other players within seven combat levels of them.
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|Charge Orb spells||
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|Crossbow Bolt spells|