Extreme Magic Potion is a potion made through Herblore skill. To make a Extreme Magic Potion you must have an Herblore level of 91 or higher. This potion will boost your magic to 106 and is very helpful if you cannot buy Overloads. To make a extreme magic potion you need to spawn a Magic Potion (::item 3042) and Ground Mud Runes (::item 9594) and use the ground mud runes on the magic potion.